measuring worm vs inchworm

measuring worm and inchworm both are nouns.

Word	Noun	Adjective	Verb	Adverb
measuring worm	Yes	No	No	No
inchworm	Yes	No	No	No

As nouns, measuring worm and inchworm are synonyms defined as:

measuring worm 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 measuring worm include looper.

measuring worm (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