eigenvalue of a matrix vs eigenvalue of a square matrix

eigenvalue of a matrix and eigenvalue of a square matrix both are nouns.

Word	Noun	Adjective	Verb	Adverb
eigenvalue of a matrix	Yes	No	No	No
eigenvalue of a square matrix	Yes	No	No	No

As nouns, eigenvalue of a matrix and eigenvalue of a square matrix are synonyms defined as:

eigenvalue of a matrix and eigenvalue of a square matrix: (mathematics) any number such that a given square matrix minus that number times the identity matrix has a zero determinant

Other synonyms of eigenvalue of a matrix include characteristic root of a square matrix, eigenvalue.

eigenvalue of a matrix (noun)	eigenvalue of a square matrix (noun)
(mathematics) any number such that a given square matrix minus that number times the identity matrix has a zero determinant	(mathematics) any number such that a given square matrix minus that number times the identity matrix has a zero determinant