hummingbird moth vs sphingid

hummingbird moth and sphingid both are nouns.

Word	Noun	Adjective	Verb	Adverb
hummingbird moth	Yes	No	No	No
sphingid	Yes	No	No	No

As nouns, hummingbird moth and sphingid are synonyms defined as:

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

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

hummingbird moth (noun)	sphingid (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