technical knockout vs TKO

technical knockout and TKO both are nouns.

Word	Noun	Adjective	Verb	Adverb
technical knockout	Yes	No	No	No
TKO	Yes	No	No	No

As nouns, technical knockout and TKO are synonyms defined as:

technical knockout and TKO: a knockout declared by the referee who judges one boxer unable to continue

technical knockout (noun)	TKO (noun)
a knockout declared by the referee who judges one boxer unable to continue	a knockout declared by the referee who judges one boxer unable to continue