belt down vs bolt down

belt down and bolt down both are verbs.

Word	Noun	Adjective	Verb	Adverb
belt down	No	No	Yes	No
bolt down	No	No	Yes	No

As verbs, belt down and bolt down are synonyms defined as:

Other synonyms of belt down include down, drink down, kill, pop, pour down, toss off.

belt down (verb)	bolt down (verb)
drink down entirely	eat a large amount of food quickly
	drink down entirely