lineation vs silhouette

lineation and silhouette both are nouns.

Word	Noun	Adjective	Verb	Adverb
lineation	Yes	No	No	No
silhouette	Yes	No	Yes	No

As nouns, silhouette is a hyponym of lineation; that is, silhouette is a word with a more specific, narrower meaning than lineation:

Other hyponyms of lineation include coastline, profile, skyline.

lineation (noun)	silhouette (noun)
the act of marking or outlining with lines	a drawing of the outline of an object; filled in with some uniform color
the line that appears to bound an object	an outline of a solid object (as cast by its shadow)

lineation (verb)	silhouette (verb)
	represent by a silhouette
	project on a background, such as a screen, like a silhouette