succession vs ecology

succession and ecology both are nouns.

Word	Noun	Adjective	Verb	Adverb
succession	Yes	No	No	No
ecology	Yes	No	No	No

succession (noun)	ecology (noun)
the action of following in order	the branch of biology concerned with the relations between organisms and their environment
acquisition of property by descent or by will	the environment as it relates to living organisms
a following of one thing after another in time
a group of people or things arranged or following in order
(ecology) the gradual and orderly process of change in an ecosystem brought about by the progressive replacement of one community by another until a stable climax is established