noise vs XT

noise and XT both are nouns.

Word	Noun	Adjective	Verb	Adverb
noise	Yes	No	Yes	No
XT	Yes	No	No	No

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

noise (noun)	XT (noun)
the quality of lacking any predictable order or plan	the presence of an unwanted signal via an accidental coupling
incomprehensibility resulting from irrelevant information or meaningless facts or remarks
the auditory experience of sound that lacks musical quality; sound that is a disagreeable auditory experience
a loud outcry of protest or complaint
sound of any kind (especially unintelligible or dissonant sound)
electrical or acoustic activity that can disturb communication

noise (verb)	XT (verb)
emit a noise