goal vs goalpost

goal and goalpost both are nouns.

Word	Noun	Adjective	Verb	Adverb
goal	Yes	No	No	No
goalpost	Yes	No	No	No

goal (noun)	goalpost (noun)
a successful attempt at scoring	one of a pair of posts (usually joined by a crossbar) that are set up as a goal at each end of a playing field
game equipment consisting of the place toward which players of a game try to advance a ball or puck in order to score points
the state of affairs that a plan is intended to achieve and that (when achieved) terminates behavior intended to achieve it
the place designated as the end (as of a race or journey)