dummy vs lay figure

dummy and lay figure both are nouns.

Word	Noun	Adjective	Verb	Adverb
dummy	Yes	Yes	Yes	No
lay figure	Yes	No	No	No

As nouns, lay figure is a hyponym of dummy; that is, lay figure is a word with a more specific, narrower meaning than dummy:

dummy: a figure representing the human form
lay figure: dummy in the form of an artist's jointed model of the human body

Other hyponyms of dummy include form, manakin, manikin, mannequin, mannikin, ventriloquist's dummy.

dummy (noun)	lay figure (noun)
a figure representing the human form	dummy in the form of an artist's jointed model of the human body
a cartridge containing an explosive charge but no bullet
an ignorant or foolish person
a person who does not talk

dummy (adjective)	lay figure (adjective)
having the appearance of being real but lacking capacity to function

dummy (verb)	lay figure (verb)
make a dummy of