bait vs ground bait

bait and ground bait both are nouns.

Word	Noun	Adjective	Verb	Adverb
bait	Yes	No	Yes	No
ground bait	Yes	No	No	No

As nouns, ground bait is a hyponym of bait; that is, ground bait is a word with a more specific, narrower meaning than bait:

bait: something used to lure fish or other animals into danger so they can be trapped or killed
ground bait: bait scattered on the water to attract fish

Other hyponyms of bait include chum, fish lure, fisherman's lure, stool pigeon.

bait (noun)	ground bait (noun)
something used to lure fish or other animals into danger so they can be trapped or killed	bait scattered on the water to attract fish
anything that serves as an enticement

bait (verb)	ground bait (verb)
harass with persistent criticism or carping
attack with dogs or set dogs upon
lure, entice, or entrap with bait