Open English Wordnet
Nouns
(n)variation, variancean activity that varies from a norm or standard“any variation in his routine was immediately reported” (n)variationa repetition of a musical theme in which it is modified or embellished (n)version, variant, variation, editionsomething a little different from others of the same type“an experimental version of the night fighter”,
“a variant of the same word”,
“an emery wheel is the modern variation of a grindstone”,
“the boy is a younger edition of his father” (n)variationan artifact that deviates from a norm or standard“he patented a variation on the sandal” (n)variationthe process of varying or being varied (n)variation(astronomy) any perturbation of the mean motion or orbit of a planet or satellite (especially a perturbation of the earth's moon) (n)variationthe act of changing or altering something slightly but noticeably from the norm or standard“who is responsible for these variations in taxation?” 