impregnate vs tincture

impregnate is not a noun while tincture is a noun.

Word	Noun	Adjective	Verb	Adverb
impregnate	No	No	Yes	No
tincture	Yes	No	Yes	No

As verbs, impregnate and tincture are synonyms defined as:

Other synonyms of impregnate include infuse, instill.

impregnate (noun)	tincture (noun)
	(pharmacology) a medicine consisting of an extract in an alcohol solution
	a quality of a given color that differs slightly from another color
	an indication that something has been present
	a substance that colors or dyes

impregnate (verb)	tincture (verb)
make pregnant	stain or tinge with a slight amount of a color
fertilize and cause to grow	fill, as with a certain quality
infuse or fill completely
fill, as with a certain quality