Q: Does the word "authority" mean the same thing in "He is an authority on corporate law." and "I have the authority to penalise the staff in my department, but not the authority to sack them."?

A: different meanings

Q: Does the word "stuff" mean the same thing in "The trunk was full of stuff." and "What is all that stuff on your bedroom floor?"?

A: the same meaning

Q: Does the word "range" mean the same thing in "Any good golf club will have a range where you can practice." and "They used to drive the cattle across the open range every spring."?

A: different meanings

Q: Does the word "make" mean the same thing in "Make an estimate." and "What do you make of his remarks?"?

A:
the same meaning