As nouns the difference between jar and fright
is that
jar is a small, approximately cylindrical container, normally made of glass or clay, for holding fruit, preserves, etc., or for ornamental purposes while
fright is a state of terror excited by the sudden appearance of danger; sudden and violent fear, usually of short duration; a sudden alarm.
As verbs the difference between jar and fright
is that
jar is to knock or strike sharply while
fright is to frighten.
As an initialism JAR
is initialism of
Java
ARchive|lang=en.