spittlebug vs homopteran

spittlebug and homopteran both are nouns.

Word	Noun	Adjective	Verb	Adverb
spittlebug	Yes	No	No	No
homopteran	Yes	No	No	No

As nouns, homopteran is a hypernym of spittlebug; that is, homopteran is a word with a broader meaning than spittlebug:

spittlebug: small leaping herbivorous insect that lives in a mass of protective froth which it and its larvae secrete
homopteran: insects having membranous forewings and hind wings

Other hypernyms of spittlebug include homopterous insect.

spittlebug (noun)	homopteran (noun)
small leaping herbivorous insect that lives in a mass of protective froth which it and its larvae secrete	insects having membranous forewings and hind wings