halt vs pull up

halt is a noun but pull up is not a noun.

Word	Noun	Adjective	Verb	Adverb
halt	Yes	Yes	Yes	No
pull up	No	No	Yes	No

As verbs, pull up is a hyponym of halt; that is, pull up is a word with a more specific, narrower meaning than halt:

Other hyponyms of halt include go off, pull up short, check, check, check, rein, rein in, conk, stall, stall, draw up, haul up, brake, settle.

halt (noun)	pull up (noun)
an interruption or temporary suspension of progress or movement
the event of something ending
the state of inactivity following an interruption

halt (adjective)	pull up (adjective)
disabled in the feet or legs

halt (verb)	pull up (verb)
stop the flow of a liquid	remove, usually with some force or effort; also used in an abstract sense
come to a halt, stop moving	cause (a vehicle) to stop
cause to come to an abrupt stop	come to a halt after driving somewhere
stop from happening or developing	straighten oneself