As verbs the difference between accrue and trained
is that
accrue is to increase, to augment; to come to by way of increase; to arise or spring as a growth or result; to be added as increase, profit, or damage, especially as the produce of money lent while
trained is (
train).
As a noun accrue
is (obsolete) something that accrues; advantage accruing.
As an adjective trained is
having undergone a course of training (sometimes in combination).