diff --git a/src/vocabulary.ts b/src/vocabulary.ts
index b320833..ef2eda4 100644
--- a/src/vocabulary.ts
+++ b/src/vocabulary.ts
@@ -244,8 +244,8 @@ export const items = [
 	'Smartphone',
 	'Clock',
 	'Pudding',
-	'Gabriel's Trumpet',
-	'Menger's sponge',
+	'Gabriels Trumpet',
+	'Mengers sponge',
 	'Hand spinner',
 	'Hypercube',
 	'Building',
@@ -342,7 +342,7 @@ export const items = [
 	'sieve of Eratosthenes',
 	'cathode ray tube',
 	'tachyon',
-	'Russell's teapot',
+	'Russells teapot',
 	'electronic device',
 	'TNT',
 	'polygon',
@@ -388,7 +388,7 @@ export const items = [
 	'Radiometer',
 	'Sand picture',
 	'Storm glass',
-	'Newton's cradle',
+	'Newtons cradle',
 	'Perpetual motion machine',
 	'The peanut part of a persimmon seed',
 	'The cylindrical thing you put the receipt in',
@@ -437,7 +437,7 @@ export const items = [
 	'Miscellaneous',
 	'Carbohydrates',
 	'Decahedron',
-	'Klein's bottle',
+	'Kleins bottle',
 	'Möbius strip',
 	'Orichalcum',
 	'Sludge',