nomination vs designation

nomination and designation both are nouns.

Word	Noun	Adjective	Verb	Adverb
nomination	Yes	No	No	No
designation	Yes	No	No	No

As nouns, designation is a hypernym of nomination; that is, designation is a word with a broader meaning than nomination:

Other hypernyms of nomination include appointment, assignment, naming.

nomination (noun)	designation (noun)
the act of officially naming a candidate	the act of putting a person into a non-elective position
an address (usually at a political convention) proposing the name of a candidate to run for election	the act of designating or identifying something
the condition of having been proposed as a suitable candidate for appointment or election	identifying word or words by which someone or something is called and classified or distinguished from others