resume vs restart

resume is a noun but restart is not a noun.

Word	Noun	Adjective	Verb	Adverb
resume	Yes	No	Yes	No
restart	No	No	Yes	No

As verbs, resume and restart are synonyms defined as:

Other synonyms of resume include re-start.

resume (noun)	restart (noun)
short descriptive summary (of events)
a summary of your academic and work history

resume (verb)	restart (verb)
take up or begin anew	take up or begin anew
return to a previous location or condition	start an engine again, for example
give a summary (of)
assume anew