casting vs bait casting

casting and bait casting both are nouns.

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

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

casting: the act of throwing a fishing line out over the water by means of a rod and reel
bait casting: the single-handed rod casting of a relatively heavy (artificial) bait

Other hyponyms of casting include fly casting, overcast, surf casting, surf fishing.

casting (noun)	bait casting (noun)
the act of creating something by casting it in a mold	the single-handed rod casting of a relatively heavy (artificial) bait
the act of throwing a fishing line out over the water by means of a rod and reel
the choice of actors to play particular roles in a play or movie
object formed by a mold