In the Latin language what is the original meaning of the word 'with'?

Cum eo is the Latin equivalent of 'with it'. In the Word by Word translation, the preposition 'cum' means 'with'. The pronoun 'eo' means 'it'. Super id is one Latin equivalent of 'upon it'. In the Word by Word translation, the preposition 'super' means 'upon'. The pronoun 'id' means 'it', in the sense of movement. Super eo is another Latin equivalent of 'upon it'. In the Word by Word translation, the preposition 'super' means 'upon'. The pronoun 'eo' means 'it', in the sense of location.