jì​shì

both... and

既是 jì​shì
both... and conjunction
is both ... (and ...); used to indicate that something possesses two qualities or roles simultaneously

He is both my teacher and my friend.

since conjunction
since; as; given that it is the case that

Since you are not feeling well, you should get some rest early.

Frequency

Movie subtitles
0.270 per million appears in 0% of films
Written text
18.0 per million

Sources

Definitions
CC-CEDICT