surface area vs baulk

surface area and baulk both are nouns.

Word	Noun	Adjective	Verb	Adverb
surface area	Yes	No	No	No
baulk	Yes	No	Yes	No

As nouns, baulk is a hyponym of surface area; that is, baulk is a word with a more specific, narrower meaning than surface area:

surface area: the extent of a 2-dimensional surface enclosed within a boundary
baulk: the area on a billiard table behind the balkline

Other hyponyms of surface area include acreage, land area, footprint, erasure, blank space, place, space, space, balk, plane section, section.

surface area (noun)	baulk (noun)
the extent of a 2-dimensional surface enclosed within a boundary	one of several parallel sloping beams that support a roof
	something immaterial that interferes with or delays action or progress
	the area on a billiard table behind the balkline

surface area (verb)	baulk (verb)
	refuse to comply