drop down vs swag

drop down is not a noun while swag is a noun.

Word	Noun	Adjective	Verb	Adverb
drop down	No	No	Yes	No
swag	Yes	No	Yes	No

As verbs, swag is a hyponym of drop down; that is, swag is a word with a more specific, narrower meaning than drop down:

drop down: fall or descend to a lower place or level
swag: droop, sink, or settle from or as if from pressure or loss of tautness

Other hyponyms of drop down include drop open, fall open, droop, flag, sag, sag, sag down.

drop down (noun)	swag (noun)
	a bundle containing the personal belongings of a swagman
	goods or money obtained illegally
	valuable goods

drop down (verb)	swag (verb)
fall or descend to a lower place or level	sway heavily or unsteadily
	walk as if unable to control one's movements
	droop, sink, or settle from or as if from pressure or loss of tautness