trichobezoar vs hair ball

trichobezoar and hair ball both are nouns.

Word	Noun	Adjective	Verb	Adverb
trichobezoar	Yes	No	No	No
hair ball	Yes	No	No	No

As nouns, trichobezoar and hair ball are synonyms defined as:

trichobezoar and hair ball: a compact mass of hair that forms in the alimentary canal (especially in the stomach of animals as a result of licking fur)

Other synonyms of trichobezoar include hairball.

trichobezoar (noun)	hair ball (noun)
a compact mass of hair that forms in the alimentary canal (especially in the stomach of animals as a result of licking fur)	a compact mass of hair that forms in the alimentary canal (especially in the stomach of animals as a result of licking fur)