powdery vs fine-grained

powdery and fine-grained both are adjectives.

Word	Noun	Adjective	Verb	Adverb
powdery	No	Yes	No	No
fine-grained	No	Yes	No	No

As adjectives, powdery and fine-grained are synonyms defined as:

Other synonyms of powdery include powdered, pulverised, pulverized, small-grained.

powdery (adjective)	fine-grained (adjective)
consisting of fine particles	dense or compact in structure or texture, as a wood composed of small-diameter cells
as if dulled in color with a sprinkling of powder	consisting of fine particles