hawk moth vs sphinx moth

hawk moth and sphinx moth both are nouns.

Word	Noun	Adjective	Verb	Adverb
hawk moth	Yes	No	No	No
sphinx moth	Yes	No	No	No

As nouns, hawk moth and sphinx moth are synonyms defined as:

hawk moth and sphinx moth: any of various moths with long narrow forewings capable of powerful flight and hovering over flowers to feed

Other synonyms of hawk moth include hawkmoth, hummingbird moth, sphingid.

hawk moth (noun)	sphinx moth (noun)
any of various moths with long narrow forewings capable of powerful flight and hovering over flowers to feed	any of various moths with long narrow forewings capable of powerful flight and hovering over flowers to feed