secular vs commoner

secular and commoner both are nouns.

Word	Noun	Adjective	Verb	Adverb
secular	Yes	Yes	No	No
commoner	Yes	No	No	No

As nouns, commoner is a hypernym of secular; that is, commoner is a word with a broader meaning than secular:

Other hypernyms of secular include common man, common person.

secular (noun)	commoner (noun)
someone who is not a clergyman or a professional person	a person who holds no title

secular (adjective)	commoner (adjective)
of or relating to clergy not bound by monastic vows
not concerned with or devoted to religion
characteristic of or devoted to the temporal world as opposed to the spiritual world
of or relating to the doctrine that rejects religion and religious considerations
characteristic of those who are not members of the clergy