ecology vs paleoecology

ecology and paleoecology both are nouns.

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

As nouns, paleoecology is a hyponym of ecology; that is, paleoecology is a word with a more specific, narrower meaning than ecology:

ecology: the branch of biology concerned with the relations between organisms and their environment
paleoecology: the branch of ecology that studies ancient ecology

Other hyponyms of ecology include palaeoecology.

ecology (noun)	paleoecology (noun)
the branch of biology concerned with the relations between organisms and their environment	the branch of ecology that studies ancient ecology
the environment as it relates to living organisms