Hence vs. Since

Henceadverb

(archaic) from here, from this place, away

Henceadverb

from the living or from this world

Henceadverb

in the future from now

Henceadverb

(conjunctive) as a result; therefore, for this reason

Henceinterjection

(obsolete) Go away! Begone!

Henceadverb

From this place; away.

Henceadverb

From this time; in the future; as, a week hence.

Henceadverb

From this reason; therefore; - as an inference or deduction.

Henceadverb

From this source or origin.

Henceverb

To send away.

Henceadverb

(used to introduce a logical conclusion) from that fact or reason or as a result;

Henceadverb

from this place;

Henceadverb

from this time;

Sinceadverb

From a specified time in the past.

Sincepreposition

From: referring to a period of time ending in the present and defining it by the point in time at which it started, or the period in which its starting point occurred.

Sincepreposition

Continuously during that period of time.

Sincepreposition

At certain points during that period of time.

Sinceadverb

From a definite past time until now; as, he went a month ago, and I have not seen him since.

Sinceadverb

In the time past, counting backward from the present; before this or now; ago.

Sinceadverb

When or that.

Sincepreposition

From the time of; in or during the time subsequent to; subsequently to; after; - usually with a past event or time for the object.

Sinceconjunction

Seeing that; because; considering; - formerly followed by that.