Here's what I could find:
rut
"track," 1580, probably from M.E. route (see route); though OED finds this "improbable." metaphoric meaning "narrow, monotonous routine" first attested 1839. Source: Online Etymology Dictionary
groove
c.1400, from O.N. grod "pit," or M.Du. groeve "furrow, ditch," from P.Gmc. *grobo (cf. O.N. grof "brook, river bed," O.H.G. gruoba "ditch," Goth. groba "pit, cave," O.E. græf "ditch"), related to grave (n.). Sense of "long, narrow channel or furrow" is 1659. Meaning "spiral cut in a phonograph record" is from 1902. Fig. sense of "routine" is from 1842, often depreciatory at first, "a rut." Adj. groovy is 1853 in lit. sense of "of a groove;" 1937 in slang sense of "excellent," from jazz slang phrase in the groove (1932) "performing well (without grandstanding)." As teen slang for "wonderful," it dates from 1944; popularized 1960s, out of currency by 1980. Source: Online Etymology Dictionary
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