verb

• (transitive) To divide (a thing) into separate parts.
  "Separate the articles from the headings."
• (transitive) To disunite from a group or mass; to disconnect.
  "Who shall separate us from the love of Christ?"
• (transitive) To cause (things or people) to be separate.
  "If the kids get too noisy, separate them for a few minutes."
• (intransitive) To divide itself into separate pieces or substances.
  "The sauce will separate if you don't keep stirring."

adj

• (followed by “from”) Not together (with); not united (to).
  "I try to keep my personal life separate from work."

noun

• (usually in the plural) Anything that is sold by itself, especially articles of clothing such as blouses, skirts, jackets, and pants.
  "French taffeta evening separates – a puffball skirt, and a ruffled blouse – were pressed flat to drag them up to date."
• (bibliography) A printing of an article from a periodical as its own distinct publication and distributed independently, often with different page numbers.