browntail vs brown-tail moth

browntail and brown-tail moth both are nouns.

Word	Noun	Adjective	Verb	Adverb
browntail	Yes	No	No	No
brown-tail moth	Yes	No	No	No

As nouns, browntail and brown-tail moth are synonyms defined as:

browntail and brown-tail moth: small brown and white European moth introduced into eastern United States; pest of various shade and fruit trees

Other synonyms of browntail include Euproctis phaeorrhoea.

browntail (noun)	brown-tail moth (noun)
small brown and white European moth introduced into eastern United States; pest of various shade and fruit trees	small brown and white European moth introduced into eastern United States; pest of various shade and fruit trees