Substituting vegetable oil for canola oil
Short answer is yes, you can almost always substitute vegetable oil and canola oil for each other.

Vegetable oil is made predominantly from soybean oil but it usually is a blend of oils from vegetables such as corn, olive, pumpkin seed, grape seed or even canola oil itself.

Canola oil is made from pressing a plant that is a hybrid of the rapeseed plant. It has the lowest levels of saturated fats out of all the vegetable oils.