Meaning : Be contingent on.
Example :
The outcomes rides on the results of the election.
Your grade will depends on your homework.
Synonyms : depend upon, devolve on, hinge on, hinge upon, ride, turn on
Meaning : Put trust in with confidence.
Example :
She is someone you can really rely on when times get rough.
You can rely on his discretion.
Synonyms : depend upon, rely on, rely upon
Meaning : Be dependent on, as for support or maintenance.
Example :
Elderly parents often depend on their adult children.
Synonyms : rely on