lay figure vs dummy

lay figure and dummy both are nouns.

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

As nouns, dummy is a hypernym of lay figure; that is, dummy is a word with a broader meaning than lay figure:

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

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

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

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