that's all; nothing more
而 (ér) · 6 strokes
Originally a pictograph of a beard, now written as 耏. The current use as a conjunction is a phonetic loan.
已 (yǐ) · 3 strokes
Derived from 巳. Depicts a snake-like creature. Based on the original meaning "a type of snake creature". The current meaning "already" is a phonetic loan.