Y-W-M – ‘consciousness’

The root ים contains every idea of heap, of gathering, pike… [and] provides by restriction, the name of the sea, and denotes then the mass of waters, the piling of the waves. But if the luminous sign ’ו is inserted in this root, it is no longer the mass of waters that it expresses; it is, so to speak, the mass of light, the gathering of the intelligible element [consciousness]; it is י’ום the universal manifestation, day. (The Hebraic Tongue Restored, Fabré d’Olivet, p. 34-35

YM – ‘accumulation of mass’

3220.  yawm; from an unused root meaning to roar;

YM The sign of manifestation united to that of exterior action as collective sign, composes a root whose purpose is to indicate universal manifestation and to develop all ideas of mass and accumulation.

In a literal and restricted sense, the sea; that is to say, the universal aqueous manifestation, the mass of waters. (The Hebraic Tongue Restored, Fabré d’Olivet, p. 365)