ease vs ease up

ease is a noun but ease up is not a noun.

Word	Noun	Adjective	Verb	Adverb
ease	Yes	No	Yes	No
ease up	No	No	Yes	No

ease (noun)	ease up (noun)
freedom from activity (work or strain or responsibility)
freedom from difficulty or hardship or effort
freedom from constraint or embarrassment
a freedom from financial difficulty that promotes a comfortable state
the condition of being comfortable or relieved (especially after being relieved of distress)

ease (verb)	ease up (verb)
lessen pain or discomfort; alleviate	become less intense
make easier	reduce pressure or intensity
lessen the intensity of or calm	move in order to make room for someone for something
move gently or carefully