Heavy is a related term of strained.
As adjectives the difference between heavy and strained
is that
heavy is (of a physical object) having great weight or
heavy can be having the heaves while
strained is forced through a strainer.
As verbs the difference between heavy and strained
is that
heavy is to make heavier while
strained is (
strain).
As an adverb heavy
is heavily.
As a noun heavy
is a villain or bad guy; the one responsible for evil or aggressive acts.