deep (comparative deeper, superlative deepest)
(a) (heading, intellectual, social) complex, involved. (b) Immersed, submerged (in).
agency (countable and uncountable, plural agencies)
(a) The capacity, condition, or state of acting or of exerting power; action or activity; operation.
(b) A department or other administrative unit of a government; also, the office or headquarters of, or the district administered by such unit of government.