hawkmoth vs sphinx moth

hawkmoth and sphinx moth both are nouns.

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

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

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

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

hawkmoth (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