interchange, period, change, convert, replace, renew
換 centers on swapping one thing for another: interchanging, converting, replacing, or renewing. The idea of a period or cycle comes from the notion of things changing hands or states over time.
換 combines 扌 (hand) with 奐, which likely contributes the sound and carries a sense of exchange or brilliance. The hand radical suggests the action of swapping or replacing.
A hand 扌 beside 奐, which looks like a person under a roof exchanging something. Imagine a hand passing an item to another person in a doorway, swapping one thing for another.
For カン, picture a can being exchanged between two hands: can -> カン, and the hand swaps the can for something else.
exchange; interchange; switching; reciprocity; barter; substitution; replacement; clearing (of checks, cheques)
change; conversion; transformation
conversion; diversion; changeover; commutation; switchover
transfer (trains, buses, etc.); change; connection
interchange
replacement; substitute; displacement; transposition; reset
conversion (e.g. yen to dollars); change; exchange; translation (numerical)
exchange; conversion
rewriting (e.g. of a book)
realization (of goods into money); conversion (into money); liquidation
ventilation
to move (something) to another location; to change the position of; to rearrange
putting in other words; rephrasing; rewording; paraphrase
substitution; replacement
to transfer (trains); to change (bus, train)
exchanging parts or equipment to effect a change in performance
to say in other words; to put another way; to express in different words; to reword; to rephrase
to buy a replacement; to replace (with a new purchase)
to rewrite; to overwrite; to renew; to transfer
ventilation fan; extractor fan