1) Bully - (i) Ghoonda ("oo"as in good) غنڈہ --- (ii) bad maash (literally, a man with bad character) بدمعاش
2) To bullly - (i) Ghunda gardi karna غنڈہ گردی کرنا (ii) bad maashi karna بدمعاشی کرنا
3) To harass - (i) tung karna (rhymes with "hung") تنگ کرنا --- (ii) cherna چھیڑنا (ch as in china but with strong aspiration, like the steam engine sound :) ، r here is a trilled sound comparable to spanish rr )
(iii) a slight variation of (ii) cher chaar karna چھیڑ چھاڑ کرنا