Exploration is a related term of trial.
As nouns the difference between exploration and trial
is that
exploration is the act of exploring while
trial is an opportunity to test something out; a test.
As an adjective trial is
pertaining to a trial or test or
trial can be characterized by having three (usually equivalent) components.
As a verb trial is
to carry out a series of tests on (a new product, procedure etc) before marketing or implementing it.