godan ~く verb / transitive:

• to put; to place
• to leave (behind)
• to establish (an organization, a facility, a position, etc.); to set up
• to appoint (someone to a certain position); to hire; to employ
• to place (one's trust, one's faith, etc); to bear (in mind etc)
• to put down a tool (e.g. a pen) hence stopping what one is doing with that tool
• to take in (boarders, etc.); to provide lodging in one's house
• to separate spatially or temporally

godan ~く verb / auxiliary verb:

• to do something in advance - after the -te form of a verb - usually written using kana alone
• to leave something in a certain state; to keep something in a certain state - after the -te form of a verb - usually written using kana alone

noun:

• ornament; figurehead; object placed in tokonoma

noun:

• place for something; storehouse

noun / ~する noun:

• substitution; replacement
• permutation - Mathematics term
• substitution; displacement - Chemistry term

noun:

• shelf that can be moved around; whatnot

noun:

• handicap go; game of go played with a handicap ➜ 置き石【おきいし】

noun:

• stone placed on railway track (by children)
• decorative garden stone
• handicap stone (in go) ➜ 置き碁【おきご】

noun:

• portable dais used to create a removable tokonoma ➜ 床の間

noun:

• place to put things; shed; storage space ➜ 置き場
• place to put oneself - usu. as 身の置き所 ➜ 身の置き所がない・身の置き所もない

noun:

• geisha house