防犯
ぼうはん · bouhan · JLPT N2 · noun
crime
🔒 防 = defend + 犯 = crime, so 防犯 = defending against crime (prevention)
防 means defend or guard, and 犯 means offense or criminal act. Together they name the act of guarding against crime, which is crime prevention.
防 — mound radical 阝(阜) + 方 fāng (phonetic)
防 is a semantic-phonetic compound. The left element 阝 (from 阜) depicts a mound or earthen embankment, suggesting barriers and defense. The right element 方 supplies the sound. Together they evoke a dike or rampart that guards against floods or attacks, hence 'to guard, prevent, defend'.
犯 — dog radical 犭 + 㔾 (kneeling person)
Originally a semantic-phonetic compound: the dog radical 犭 suggested an animal attacking, while 㔾 (a kneeling figure) hinted at the sound and the idea of submission or transgression. The meaning broadened from 'a beast attacking a person' to 'to violate, offend, commit (a crime),' giving modern senses like 'criminal' and 'to infringe.'