chinch vs bed bug

chinch and bed bug both are nouns.

Word	Noun	Adjective	Verb	Adverb
chinch	Yes	No	No	No
bed bug	Yes	No	No	No

As nouns, chinch and bed bug are synonyms defined as:

chinch and bed bug: bug of temperate regions that infests especially beds and feeds on human blood

Other synonyms of chinch include bedbug, Cimex lectularius.

chinch (noun)	bed bug (noun)
bug of temperate regions that infests especially beds and feeds on human blood	bug of temperate regions that infests especially beds and feeds on human blood