monotonic vs unmodulated

monotonic and unmodulated both are adjectives.

Word	Noun	Adjective	Verb	Adverb
monotonic	No	Yes	No	No
unmodulated	No	Yes	No	No

monotonic (adjective)	unmodulated (adjective)
of a sequence or function; consistently increasing and never decreasing or consistently decreasing and never increasing in value	characterized by lack of variation in pitch, tone, or volume
sounded or spoken in a tone unvarying in pitch