definition of
equivalence

[1] #1 equivalence n. [equality, equation, par] a state of being essentially equal or equivalent; equally balanced; "on a par with the best". wn

[2] #2 equivalence n. essential equality and interchangeability. wn

[3] #3 equivalence n. [comparison, compare, comparability] qualities that are comparable; "no comparison between the two books"; "beyond compare". wn