viewpoint vs angle

viewpoint and angle both are nouns.

Word	Noun	Adjective	Verb	Adverb
viewpoint	Yes	No	No	No
angle	Yes	No	Yes	No

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

Other hyponyms of viewpoint include cityscape, landscape, slant, complexion.

viewpoint (noun)	angle (noun)
a mental position from which things are viewed	a biased way of looking at or presenting something
a place from which something can be viewed	the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians

viewpoint (verb)	angle (verb)
	present with a bias
	fish with a hook
	seek indirectly
	to incline or bend from a vertical position
	move or proceed at an angle