tec vs detective

tec and detective both are nouns.

Word	Noun	Adjective	Verb	Adverb
tec	Yes	No	No	No
detective	Yes	No	No	No

As nouns, tec and detective are synonyms defined as:

Other synonyms of tec include investigator, police detective.

tec (noun)	detective (noun)
a police officer who investigates crimes	a police officer who investigates crimes
	an investigator engaged or employed in obtaining information not easily available to the public