luting vs lute

luting and lute both are nouns.

Word	Noun	Adjective	Verb	Adverb
luting	Yes	No	No	No
lute	Yes	No	No	No

As nouns, luting and lute are synonyms defined as:

luting and lute: a substance for packing a joint or coating a porous surface to make it impervious to gas or liquid

luting (noun)	lute (noun)
a substance for packing a joint or coating a porous surface to make it impervious to gas or liquid	chordophone consisting of a plucked instrument having a pear-shaped body, a usually bent neck, and a fretted fingerboard
	a substance for packing a joint or coating a porous surface to make it impervious to gas or liquid