We need to find the item that does not belong to the group. (1) Mustard yields seeds from which oil is commonly extracted (oilseed). (2) Rapeseed (Canola) yields seeds from which oil is commonly extracted (oilseed). (3) Groundnut (Peanut) is botanically a legume but functions like a nut and yields seeds from which oil is commonly extracted (oilseed). (4) Cashew nut is a tree nut, primarily consumed as a nut. While oil can be ex tracted, it’s not typically classified primarily as an oilseed like the others. Botanically, the cashew ’nut’ is a seed that grows outside the cashew ’apple’ (fruit). Mustard, Rapeseed, and Groundnut are all major sources of edible oil, commonly known as oilseeds. Cashew nut is primarily considered a tree nut. Therefore, Cashew nut is the word that is not like the others.