looper vs inchworm

looper and inchworm both are nouns.

Word	Noun	Adjective	Verb	Adverb
looper	Yes	No	No	No
inchworm	Yes	No	No	No

As nouns, looper and inchworm are synonyms defined as:

looper and inchworm: small hairless caterpillar having legs on only its front and rear segments; mostly larvae of moths of the family Geometridae

Other synonyms of looper include measuring worm.

looper (noun)	inchworm (noun)
small hairless caterpillar having legs on only its front and rear segments; mostly larvae of moths of the family Geometridae	small hairless caterpillar having legs on only its front and rear segments; mostly larvae of moths of the family Geometridae