characteristic root of a square matrix vs eigenvalue

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

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

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

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

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

characteristic root of a square matrix (noun)	eigenvalue (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