Well, from the pages of  history of the  food and culinary dictionary, the rices dishes of biryani and #pulao/ #pilaf have been interchanged to mean the same thing..loosely explained as a mix of rice with meat/veggies with Indian spices. Now ,while in terms of technique...

Arabic Chicken Pulao is a mild version of Pulao with the dominating flavor of whole spices .I am always amazed at how many ways there are to cook rice,especially even amongst Indians we cook rice in myriad ways, each recipe almost the same way albeit...