camel's hair vs camelhair

camel's hair and camelhair both are nouns.

Word	Noun	Adjective	Verb	Adverb
camel's hair	Yes	No	No	No
camelhair	Yes	No	No	No

As nouns, camel's hair and camelhair are synonyms defined as:

camel's hair and camelhair: a soft tan cloth made with the hair of a camel

camel's hair (noun)	camelhair (noun)
a soft tan cloth made with the hair of a camel	a soft tan cloth made with the hair of a camel