When bending the elbow the biceps are the agonist.
Acetylcholine is an agonist at the a cholinergic receptor.
Word: "agonist"
different meanings

The newsman wanted to break a big story, something that would make him famous.
When news of their divorce broke, ...
Word: "break"
the same meaning

Strike an arc.
The bullet struck her thigh.
Word: "strike"
different meanings

Can I go now?
It's your turn; go.
Word: "go"

the same meaning