unguent vs balm

unguent and balm both are nouns.

Word	Noun	Adjective	Verb	Adverb
unguent	Yes	No	No	No
balm	Yes	No	No	No

As nouns, unguent and balm are synonyms defined as:

unguent and balm: semisolid preparation (usually containing a medicine) applied externally as a remedy or for soothing an irritation

Other synonyms of unguent include ointment, salve, unction.

unguent (noun)	balm (noun)
semisolid preparation (usually containing a medicine) applied externally as a remedy or for soothing an irritation	semisolid preparation (usually containing a medicine) applied externally as a remedy or for soothing an irritation
	any of various aromatic resinous substances used for healing and soothing