noun
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a frame - a) the case or border into which a window, door, etc. is set and which serves as a structural support; d) a border, often ornamental, surrounding a picture, photo, painting, etc.
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a framework - a) basic or skeletal structure around which a thing is built and that gives the thing its shape; framework; b) the way that anything is constructed or put together.
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a set of circumstances that serve as background to an event.
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that which indicates or limits the area of work, thought or thought process, etc.
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a style, design, pattern etc. of a thing; construction.
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a number of people or things grouped together because of certain likenesses or common traits; class; category.