take over

Assume control, management, or possession of, as in The pilot told his copilot to take over the controls, or There's a secret bid to take over our company. [Late 1800s]

The verb has 10 meanings:

Meaning #1: seize and take control without authority and possibly with force; take as one's right or possession
  Synonyms: assume, usurp, seize, arrogate

Meaning #2: take on titles, offices, duties, responsibilities
  Synonyms: assume, adopt, take on

Meaning #3: free someone temporarily from his or her obligations
  Synonym: relieve

Meaning #4: take on as one's own the expenses or debts of another person
  Synonyms: bear, accept, assume

Meaning #5: take over ownership of; of corporations and companies
  Synonyms: buy out, buy up

Meaning #6: do over
  Synonym: repeat

Meaning #7: take up and practice as one's own
  Synonyms: adopt, borrow, take up

Meaning #8: take possession of without permission or take with force, as after a conquest or invasion
  Synonyms: appropriate, capture, seize, conquer, usurp

Meaning #9: take up, as of debts or payments
  Synonym: absorb

Meaning #10: take by conquest; as of territory
  Synonym: annex