dung beetle vs scarabaeid

dung beetle and scarabaeid both are nouns.

Word	Noun	Adjective	Verb	Adverb
dung beetle	Yes	No	No	No
scarabaeid	Yes	No	No	No

As nouns, scarabaeid is a hypernym of dung beetle; that is, scarabaeid is a word with a broader meaning than dung beetle:

dung beetle: any of numerous beetles that roll balls of dung on which they feed and in which they lay eggs
scarabaeid: any of numerous species of stout-bodied beetles having heads with horny spikes

Other hypernyms of dung beetle include scarabaean, scarabaeid beetle.

dung beetle (noun)	scarabaeid (noun)
any of numerous beetles that roll balls of dung on which they feed and in which they lay eggs	any of numerous species of stout-bodied beetles having heads with horny spikes