diff --git a/engine/events/hidden_objects/bookshelves.asm b/engine/events/hidden_objects/bookshelves.asm
index a2cfb648a0..813cfc49a4 100644
--- a/engine/events/hidden_objects/bookshelves.asm
+++ b/engine/events/hidden_objects/bookshelves.asm
@@ -24,7 +24,7 @@ PrintBookshelfText::
 	pop af
 	call PrintPredefTextID
 	xor a
-	ldh [hWasBookShelfTextFound], a
+	ldh [hInteractedWithBookshelf], a
 	ret
 .nextBookshelfEntry1
 	inc hl
@@ -33,7 +33,7 @@ PrintBookshelfText::
 	jr .loop
 .noMatch
 	ld a, $ff
-	ldh [hWasBookShelfTextFound], a
+	ldh [hInteractedWithBookshelf], a
 	farjp PrintCardKeyText
 
 INCLUDE "data/tilesets/bookshelf_tile_ids.asm"
diff --git a/engine/gfx/sprite_oam.asm b/engine/gfx/sprite_oam.asm
index 2049002cfd..4a31ab5e4d 100644
--- a/engine/gfx/sprite_oam.asm
+++ b/engine/gfx/sprite_oam.asm
@@ -28,7 +28,7 @@ PrepareOAMData::
 	inc e
 	inc e
 	ld a, [de] ; [x#SPRITESTATEDATA1_IMAGEINDEX]
-	ld [wSpriteImageIndexTempCopy], a
+	ld [wSpriteImageIndexBackup], a
 	cp $ff ; off-screen (don't draw)
 	jr nz, .visible
 
@@ -98,7 +98,7 @@ PrepareOAMData::
 	push bc
 	ld b, a
 
-	ld a, [wSpriteImageIndexTempCopy]            ; temp copy of [x#SPRITESTATEDATA1_IMAGEINDEX]
+	ld a, [wSpriteImageIndexBackup]
 	swap a                   ; high nybble determines sprite used (0 is always player sprite, next are some npcs)
 	and $f
 
diff --git a/engine/overworld/sprite_collisions.asm b/engine/overworld/sprite_collisions.asm
index 9fc9f93a77..92106829e7 100644
--- a/engine/overworld/sprite_collisions.asm
+++ b/engine/overworld/sprite_collisions.asm
@@ -80,7 +80,7 @@ DetectCollisionBetweenSprites:
 	and $f0
 	or c
 
-	ldh [hSpriteCollisionsTempYCoord], a ; store Y coordinate adjusted for direction of movement
+	ldh [hSpriteCollisionsTempYCoord], a ; y adjusted for direction of movement
 
 	ld a, [hli] ; a = [i#SPRITESTATEDATA1_XSTEPVECTOR] (-1, 0, or 1)
 	call SetSpriteCollisionValues
@@ -93,7 +93,7 @@ DetectCollisionBetweenSprites:
 	and $f0
 	or c
 
-	ldh [hSpriteCollisionsTempXCoord], a ; store X coordinate adjusted for direction of movement
+	ldh [hSpriteCollisionsTempXCoord], a ; x adjusted for direction of movement
 
 	ld a, l
 	add 7
@@ -111,7 +111,7 @@ DetectCollisionBetweenSprites:
 	xor a ; zero the loop counter
 
 .loop
-	ldh [hSpriteCollisionsLoopCounter], a ; store loop counter
+	ldh [hSpriteCollisionsLoopCounter], a
 	swap a
 	ld e, a
 	ldh a, [hCurrentSpriteOffset]
@@ -179,7 +179,7 @@ DetectCollisionBetweenSprites:
 .next1
 	ldh a, [hSpriteCollisionsTempYCoord] ; a = distance between adjusted Y coordinates
 	sub b
-	ldh [hSpriteCollisionsAdjustedDistance], a ; store distance adjusted using sprite i's direction
+	ldh [hSpriteCollisionsAdjustedDistance], a
 	ld a, b
 	ldh [hSpriteCollisionsTempYCoord], a ; store 7 or 9 depending on sprite i's delta Y
 	jr c, .checkXDistance
@@ -194,7 +194,7 @@ DetectCollisionBetweenSprites:
 	ld b, 9
 
 .next2
-	ldh a, [hSpriteCollisionsAdjustedDistance] ; a = distance adjusted using sprite i's direction
+	ldh a, [hSpriteCollisionsAdjustedDistance]
 	sub b ; adjust distance using sprite j's direction
 	jr z, .checkXDistance
 	jr nc, .next ; go to next sprite if distance is still positive after both adjustments
@@ -250,7 +250,7 @@ DetectCollisionBetweenSprites:
 .next3
 	ldh a, [hSpriteCollisionsTempXCoord] ; a = distance between adjusted X coordinates
 	sub b
-	ldh [hSpriteCollisionsAdjustedDistance], a ; store distance adjusted using sprite i's direction
+	ldh [hSpriteCollisionsAdjustedDistance], a
 	ld a, b
 	ldh [hSpriteCollisionsTempXCoord], a ; store 7 or 9 depending on sprite i's delta X
 	jr c, .collision
@@ -265,7 +265,7 @@ DetectCollisionBetweenSprites:
 	ld b, 9
 
 .next4
-	ldh a, [hSpriteCollisionsAdjustedDistance] ; a = distance adjusted using sprite i's direction
+	ldh a, [hSpriteCollisionsAdjustedDistance]
 	sub b ; adjust distance using sprite j's direction
 	jr z, .collision
 	jr nc, .next ; go to next sprite if distance is still positive after both adjustments
@@ -296,7 +296,7 @@ DetectCollisionBetweenSprites:
 ; to indicate which sprite the collision occurred with
 	inc l
 	inc l
-	ldh a, [hSpriteCollisionsLoopCounter] ; a = loop counter
+	ldh a, [hSpriteCollisionsLoopCounter]
 	ld de, SpriteCollisionBitTable
 	add a
 	add e
@@ -313,7 +313,7 @@ DetectCollisionBetweenSprites:
 	ld [hl], a
 
 .next
-	ldh a, [hSpriteCollisionsLoopCounter] ; a = loop counter
+	ldh a, [hSpriteCollisionsLoopCounter]
 	inc a
 	cp $10
 	jp nz, .loop
diff --git a/home/hidden_objects.asm b/home/hidden_objects.asm
index 723e3056b6..2e3510b04b 100644
--- a/home/hidden_objects.asm
+++ b/home/hidden_objects.asm
@@ -26,7 +26,7 @@ CheckForHiddenObjectOrBookshelfOrCardKeyDoor::
 	jr .done
 .hiddenObjectNotFound
 	farcall PrintBookshelfText
-	ldh a, [hWasBookShelfTextFound]
+	ldh a, [hInteractedWithBookshelf]
 	and a
 	jr z, .done
 .nothingFound
diff --git a/ram/hram.asm b/ram/hram.asm
index 9b8a5abc6c..ea2c981e13 100644
--- a/ram/hram.asm
+++ b/ram/hram.asm
@@ -330,7 +330,7 @@ hGymTrashCanRandNumMask::
 	db
 
 NEXTU
-hWasBookShelfTextFound:: db ; set to 0 if found, $FF if not found when attempting to interact with a hidden object
+hInteractedWithBookshelf:: db ; set to 0 if you interacted with a bookshelf, $FF if not when attempting to interact with a hidden object
 ENDU
 
 	ds 1
diff --git a/ram/wram.asm b/ram/wram.asm
index c00d5445cb..8c246b8a6d 100644
--- a/ram/wram.asm
+++ b/ram/wram.asm
@@ -1914,7 +1914,7 @@ wMissableObjectFlagsEnd::
 	ds 7
 
 ; temp copy of SPRITESTATEDATA1_IMAGEINDEX (used for sprite facing/anim)
-wSpriteImageIndexTempCopy:: db
+wSpriteImageIndexBackup:: db
 
 ; each entry consists of 2 bytes
 ; * the sprite ID (depending on the current map)