This book handles the use of English collocation in third year college students' essay writings to identify the problems and suggest remedial work to overcome such problems. The use of collocations comes with practice, experience and exposure to the native language; hence college students face problems in the proper use of such combinations. . The thesis was done at Salahadin University in 2013, three colleges have been chosen, college of Languages, College of Educations and College of Basic Education.