proof

(say) + (correct)
★★★☆☆
12 strokes

Onyomi

SHOU

Mnemonic

The cop said, "If you can talk to me and SHOW me correct proof , you're good to go. "

Kunyomi

あかし evidence, testimony . . .: somewhere in between 証明(しょうめい: proof) and 証拠 (しょうこ: physical evidence). You'd typically use 証 when you're talking about evidence of god such as miracles. Or you'd challenge someone "You say you're honest and give to charity, but do you have any evidence of this?" Unlike 証拠、 証 does not have to be physical, it can be verbal.
★★★☆☆

Jukugo

運転免許証(うんてん めんきょしょ)

drivers' license ★★★☆☆
(drive a vehicle) + (license) + (proof) = 運転免許証 (drivers' license)

証拠(しょうこ)

physical evidence ★★☆☆☆ FPNP
(proof) + (evidence which is the basis for a judgment) = 証拠 (physical evidence)

physical evidence, such as a footprint, or "This green tap-water is evidence of pollution." Also this is the word one uses about evidence at trials, not 証.

証明書(しょうめいしょ)

legal certification ★☆☆☆☆
(proof) + (bright) + (write) = 証明書 (legal certification)

a legal document certifying something: that you're married, that you have a job, that you paid tax, that you ...

Synonyms

evidence
証拠    証明    証    証言   
guarantee
保証    保障する