serial vs weekly

serial and weekly both are nouns.

Word	Noun	Adjective	Verb	Adverb
serial	Yes	Yes	No	No
weekly	Yes	Yes	No	Yes

As nouns, weekly is a hyponym of serial; that is, weekly is a word with a more specific, narrower meaning than serial:

Other hyponyms of serial include semiweekly, semimonthly, monthly, quarterly, bimonthly, biweekly.

serial (noun)	weekly (noun)
a serialized set of programs	a periodical that is published every week (or 52 issues per year)
a periodical that appears at scheduled times

serial (adjective)	weekly (adjective)
pertaining to or occurring in or producing a series	of or occurring every seven days
pertaining to or composed in serial technique
of or relating to the sequential performance of multiple operations
in regular succession without gaps

serial (adverb)	weekly (adverb)
	without missing a week