The word 'junior' means someone who is younger or has less experience than someone else. For example, a junior in school is usually in a lower grade than a senior.
You pronounce 'junior' like this: JOO-nee-er.
The word 'junior' comes from the Latin word 'junior', which means 'younger'.
The word 'junior' in Kannada is 'ಜೂನಿಯರ್' (Jūniyar).