halt vs pause

halt and pause both are nouns.

Word	Noun	Adjective	Verb	Adverb
halt	Yes	Yes	Yes	No
pause	Yes	No	Yes	No

As nouns, pause is a hypernym of halt; that is, pause is a word with a broader meaning than halt:

halt (noun)	pause (noun)
an interruption or temporary suspension of progress or movement	temporary inactivity
the event of something ending	a time interval during which there is a temporary cessation of something
the state of inactivity following an interruption

halt (adjective)	pause (adjective)
disabled in the feet or legs

halt (verb)	pause (verb)
stop the flow of a liquid	cease an action temporarily
come to a halt, stop moving	interrupt temporarily an activity before continuing
cause to come to an abrupt stop
stop from happening or developing