to try sth out; to be on probation
试 (shì) · 8 strokes
Simplified form of 試. Phonosemantic compound. 言 represents the meaning and 式 represents the sound.
用 (yòng) · 5 strokes
Depicts a bucket with a handle on the right side. Based on the original meaning "bucket". The meaning of this character has shifted over time and now means "use".