المفعول فيه اشمل لانه ينقسم الى ظرف مكان وظرف زمان

هما اسمان لمسمى واحد http://www.drmosad.com/index41.htm

There is a difference between the 2 things : a noun can be an object or a subject or any other thing so there is a difference between the nature of the word and it's function darf makan or zaman are single words that can be used for a lot of reasons if one of the reasons is to tell us where and one the action happened in a sentence starting by a verb (jomla fi3lia ) then it's a maf3ol fih

هنا ايضا اختي تجدين الاجابة على سؤالك بارك الله فيك وزادك علما http://www.arabtranslators.org/atn_grammar/gg_noun_mafoolfihi.htm

المفعول فيه أشكل فهو ينقسم الي زمان ومكان ..