sentences:  However, 1st (first) and 2nd (second) sound unfamiliar to their cardinal counterparts 1 (one) and 2 (two).This is because these two ordinal numbers were derived from different languages, with "first" being derived from the Proto-Indo-European root meaning "forward", and "second" deriving from the Latin word "secundus", meaning "following".The phenomenon of ordinal numbers being collateral adjectives of cardinal numbers is common in the Sinospheric languages, including Japanese, Korean, and Vietnamese.