running vs continual

running is a noun but continual is not a noun.

Word	Noun	Adjective	Verb	Adverb
running	Yes	Yes	No	No
continual	No	Yes	No	No

running (noun)	continual (noun)
the act of participating in an athletic competition involving running on a track
the act of running; traveling on foot at a fast pace
the act of administering or being in charge of something
(American football) a play in which a player attempts to carry the ball through or past the opposing team
the state of being in operation

running (adjective)	continual (adjective)
of advancing the ball by running	recurring regularly or frequently in a prolonged and closely spaced series
executed or initiated by running	having no interruptions
(of fluids) moving or issuing in a stream
continually repeated over a period of time
(of e.g. a machine) performing or capable of performing
measured lengthwise