Rigid (adjective) سخت، غیر لچکدار

unable to bend or be forced out of shape; not flexible.
Example: “a seat of rigid orange plastic”
Prowl (verb) گشت کرنا، آوارہ پھرنا

(of a person or animal) move about restlessly and stealthily, especially in search of prey.
Example: “lions prowling in the bush”