esoteric

Fundamental is a related term of esoteric.

As adjectives the difference between fundamental and esoteric

is that fundamental is pertaining to the foundation or basis; serving for the foundation hence: essential, as an element, principle, or law; important; original; elementary while esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle.

As a noun fundamental

is a leading or primary principle, rule, law, or article, which serves as the groundwork of a system; essential part, as, the fundamentals of linear algebra.

Esoteric is a synonym of cloaked.

As adjectives the difference between esoteric and cloaked

is that esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle while cloaked is wearing a cloak.

As a verb cloaked is

(cloak).

As adjectives the difference between vague and esoteric

is that vague is not clearly expressed; stated in indefinite terms while esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle.

As a noun vague

is a wandering; a vagary.

As a verb vague

is to wander; to roam; to stray.

As adjectives the difference between mystical and esoteric

is that mystical is relating to mystics or mysticism while esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle.

Esoteric is a related term of symbolical.

As adjectives the difference between esoteric and symbolical

is that esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle while symbolical is of, related to, or being a symbol; symbolic.

Inscrutable is a related term of esoteric.

As adjectives the difference between inscrutable and esoteric

is that inscrutable is difficult or impossible to comprehend, fathom or interpret while esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle.

As a noun inscrutable

is one who or that which is inscrutable; a person, etc that cannot be comprehended.

As adjectives the difference between uncanny and esoteric

is that uncanny is strange, and mysteriously unsettling (as if supernatural); weird while esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle.

As adjectives the difference between vernacular and esoteric

is that vernacular is of or pertaining to everyday language while esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle.

As a noun vernacular

is the language of a people or a national language.

As an adjective esoteric is

intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle.

As adjectives the difference between esoteric and abstract

is that esoteric is intended for or likely to be understood by only a small number of people with a specialized knowledge or interest, or an enlightened inner circle while abstract is derived; extracted.

As a noun abstract is

an abridgement or summary.

As a verb abstract is

to separate; to disengage.