universal time vs UT

universal time and UT both are nouns.

Word	Noun	Adjective	Verb	Adverb
universal time	Yes	No	No	No
UT	Yes	No	No	No

As nouns, universal time and UT are synonyms defined as:

universal time and UT: the local time at the 0 meridian passing through Greenwich, England; it is the same everywhere

Other synonyms of universal time include GMT, Greenwich Mean Time, Greenwich Time, UT1.

universal time (noun)	UT (noun)
the local time at the 0 meridian passing through Greenwich, England; it is the same everywhere	a state in the western United States; settled in 1847 by Mormons led by Brigham Young
	the local time at the 0 meridian passing through Greenwich, England; it is the same everywhere