contour line vs contour

contour line and contour both are nouns.

Word	Noun	Adjective	Verb	Adverb
contour line	Yes	No	No	No
contour	Yes	No	Yes	No

As nouns, contour line and contour are synonyms defined as:

contour line and contour: a line drawn on a map connecting points of equal height

contour line (noun)	contour (noun)
a line drawn on a map connecting points of equal height	any spatial attributes (especially as defined by outline)
	a feature (or the order or arrangement of features) of anything having a complex structure
	a line drawn on a map connecting points of equal height

contour line (verb)	contour (verb)
	form the contours of