s vs sec

s and sec both are nouns.

Word	Noun	Adjective	Verb	Adverb
s	Yes	No	No	No
sec	Yes	Yes	No	No

As nouns, s and sec are synonyms defined as:

s and sec: 1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites

Other synonyms of s include second.

s (noun)	sec (noun)
the 19th letter of the Roman alphabet	ratio of the hypotenuse to the adjacent side of a right-angled triangle
1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites	1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites

s (adjective)	sec (adjective)
	(of champagne) moderately dry