newel post vs newel

newel post and newel both are nouns.

Word	Noun	Adjective	Verb	Adverb
newel post	Yes	No	No	No
newel	Yes	No	No	No

As nouns, newel post and newel are synonyms defined as:

newel post and newel: the post at the top or bottom of a flight of stairs; it supports the handrail

newel post (noun)	newel (noun)
the post at the top or bottom of a flight of stairs; it supports the handrail	the central pillar of a circular staircase
	the post at the top or bottom of a flight of stairs; it supports the handrail