same – такой же; одновременно; одно и то же.

same (adj.) (из староанглийского «swa same» - такой же); из протогерманского *sama- такой же; из PIE *samos – такой же; из корня *sem- (1) – один, такой же, как, вместе.
perhaps abstracted from Old English swa same "the same as," but more likely from Old Norse same, samr "same," both from Proto-Germanic *sama- "same" (cognates: Old Saxon, Old High German, Gothic sama, Old High German samant, German samt "together, with," Gothic samana "together," Dutch zamelen "to collect," German zusammen "together"), from PIE *samos "same," from root *sem- (1) "one," also "as one" (adv.), "together with" (cognates: Sanskrit samah "even, level, similar, identical;" Avestan hama "similar, the same;" Greek hama "together with, at the same time," homos "one and the same," homios "like, resembling," homalos "even;" Latin similis "like;" Old Irish samail "likeness;" Old Church Slavonic samu "himself").

1) Сую (зияю) – семя – семья; Gothic samana - вместе

2) С + ум – сам. Староанглийское «swa» = «себе» (на уме)