foothold, based on, follow, therefore
拠 centers on having a firm base or starting point: a foothold, something to rely on, or a reason from which an action follows. The meanings 'based on', 'follow', and 'therefore' all extend from this idea of grounding or proceeding from a fixed point.
拠 is the modern simplified form of 據. The older form combines 扌 (hand) with 豦, which likely contributed the sound and the idea of holding or placing firmly. The modern right side 処 is a simplification and should not be treated as the original historical component.
The hand radical 扌 beside 処 suggests a hand placing something firmly in a spot. Picture a climber's hand finding a solid foothold on a rock face: that grip is the basis for the next move.
For キョ, imagine a climber shouting 'key-oh!' as they find a key foothold: 'key-oh' -> キョ, and that foothold is the key to continuing.
evidence; proof
base (of operations); site; location; center; foothold; stronghold; (strategic) position
basis; grounds; foundation; reason; authority
occupation; taking and maintaining exclusive control (of a location)
being based on; following (a rule, guidelines, etc.); conforming to (standards, regulations, etc.); complying with
stronghold; inner citadel; base; headquarters
donation; contribution
grounds; foundation; authority
stronghold; inner citadel; base; headquarters
grounds of an argument
dependence
(an) authority; (a) source; (written) reference
rivalry of local warlords; a number of powerful (talented, influential) persons standing by themselves in a given field
holding one's ground; defending local authority
base (of operations)
Occupy Wall Street (protest movement, 2011-)
Occupy Wall Street (protest movement, 2011-)
unlawful occupation (e.g. of a house, of land, etc.); squatting
unlawful occupant (e.g. of a house, of land, etc.); squatter
anecdotal evidence