silhouette vs lineation

silhouette and lineation both are nouns.

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

As nouns, lineation is a hypernym of silhouette; that is, lineation is a word with a broader meaning than silhouette:

Other hypernyms of silhouette include outline.

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

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