Used other than figuratively or idiomatically: see of, a, piece.
Of the same kind.
Of geometrical figures including triangles, squares, ellipses, arcs and more complex figures, having the same shape but possibly different size, rotational orientation, and position; in particular, having corresponding angles equal and corresponding line segments proportional; such that one can be had from the other using a sequence of rotations, translations and scalings.
Of two square matrices; being such that a conjugation sends one matrix to the other.
Having traits or characteristics in common; alike, comparable.
That which is similar to, or resembles, something else, as in quality, form, etc.
A material that produces an effect that resembles the symptoms of a particular disease.