Oil

(1) oil remains liquid  at room temperature 

(2) Oil have unsaturated fatty acids. 

(3) Mostly derived from plants.

(4) Example : Butter, beef fat.

Fat

(1) Fat remains  solid at room Temperature. 

(2) Fat have saturated fatty acid.

(3) Mostly derived  from animal. 

(4) Example :vegetable Oil, fish Oil.