monotonic vs decreasing monotonic

monotonic and decreasing monotonic both are adjectives.

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

monotonic (adjective)	decreasing monotonic (adjective)
of a sequence or function; consistently increasing and never decreasing or consistently decreasing and never increasing in value	consistently decreasing
sounded or spoken in a tone unvarying in pitch