The gravitational force is indeed an example of a non-contact force because it acts at a distance. This force results from the mass of an object and affects other masses without the need for physical contact. For instance, the Earth exerts a gravitational pull on all objects around it, pulling them towards its center.
In contrast, frictional, applied, and tension forces all require direct contact between objects. Frictional force arises when two surfaces move against each other, applied force involves pushing or pulling an object using direct contact, and tension force occurs in a rope or similar medium when it is pulled tight, requiring the objects at either end to be in contact with the rope. Non-contact forces like gravity can influence an object's motion even if there is no physical interaction, which distinguishes them from the other types mentioned.