the define of homograph
LINK / CITE ADD TO WORD LIST. noun. The definition of a homograph is a word that is spelled like another word or other words, but has a different meaning and sometimes sounds different. An example of a homograph is evening, which is the time of day after the sun has set or making something level or flat.
In projective geometry, a homography is an isomorphism of projective spaces, induced by an isomorphism of the vector spaces from which they are derived. It is a bijection that maps lines to lines, and thus a collineation.