paleoecology vs palaeoecology

paleoecology and palaeoecology both are nouns.

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

As nouns, paleoecology and palaeoecology are synonyms defined as:

paleoecology and palaeoecology: the branch of ecology that studies ancient ecology

paleoecology (noun)	palaeoecology (noun)
the branch of ecology that studies ancient ecology	the branch of ecology that studies ancient ecology