Esoteric vs Avantgarde - What's the difference?

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.

alternative form of lang=en.

(en adjective)

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.

''The writing in this manual is very esoteric ; I need a degree in engineering just to understand it!

Having to do with concepts that are highly theoretical and without obvious practical application; often with mystical or religious connotations.

Confidential; private.

* (understood only by a chosen few or an enlightened inner circle) arcane, recondite * cerebral * secretive