1. lean on, rest on, lean against, touch, adjoin, meet, contact

usage: rest on for support; "you can lean on me if you get tired"

2. repose on, rest on, build on, build upon, depend on, devolve on, depend upon, ride, turn on, hinge on, hinge upon

usage: be based on; of theories and claims, for example; "What's this new evidence based on?"

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