cease vs pass away

cease is a noun but pass away is not a noun.

Word	Noun	Adjective	Verb	Adverb
cease	Yes	No	Yes	No
pass away	No	No	Yes	No

As verbs, pass away is a hyponym of cease; that is, pass away is a word with a more specific, narrower meaning than cease:

cease: have an end, in a temporal, spatial, or quantitative sense; either spatial or metaphorical
pass away: go out of existence

cease (noun)	pass away (noun)
(`cease' is a noun only in the phrase `without cease') end

cease (verb)	pass away (verb)
put an end to a state or an activity	pass from physical life and lose all bodily attributes and functions necessary to sustain life
have an end, in a temporal, spatial, or quantitative sense; either spatial or metaphorical	go out of existence