Many shapes have metaphorical names, i.e., their names are
metaphors: these
shapes are named after a most common object that has it. For example, "U-shape" is a shape that resembles the letter
U, a
bell-shaped curve has the shape of the vertical cross-section of a
bell, etc.These terms may variously refer to objects, their
cross-sections or
projections.Some of these names are "classical terms", i.e., words of
Latin or
Ancient Greek etymology. Others are
English language constructs (although the base words may have non-English etymology). In some disciplines, where shapes of subjects in question are a very important consideration, the shape naming may be quite elaborate, see, e.g.,
the taxonomy of shapes of
plant leaves in
botany.
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