Tenka-toitsu (or Tenga-toitsu) refers to the act of putting the whole country of Japan (except for most parts of Ryukyu and Ezo [inhabited area of Ainu]) under own control and unifying it, mainly during the period from the Seongoku Period (Period of Warring State) to the early Edo period.
天下統一（てんかとういつ/てんがとういつ）は、主に日本の戦国時代(日本)から江戸時代初期にかけて、日本全土（琉球と蝦夷の大半を除く）を、自らの支配下に置き日本全土を統一する事を指す。