rarefied (en)

(adjective) being less dense / (adjective) of, relating to, or interesting to a select group; esoteric / (adjective) very high / (verb) to make rare, thin, porous, or less dense; to expand without the addition of matter / (verb) to make more spiritual, refined, or abstruse / (verb) to become less dense

syncretism (en)

the attempted reconciliation or union of different or opposing principles, practices, or parties, as in philosophy or religion

teleological (en)

the philosophical attempt to describe things in terms of their apparent intrinsic purpose, directive principle, or goal, irrespective of human use or opinion