Q: Does the word "lift" mean the same thing in "You never lift a finger to help me!" and "Lift a load."?

A: the same meaning

Q: Does the word "depth" mean the same thing in "The depth of the water." and "From the depths of darkest Africa."?

A: different meanings

Q: Does the word "have" mean the same thing in "What do we have here?" and "Have a lover."?

A: different meanings

Q: Does the word "head" mean the same thing in "The head of a comet." and "She gave great head."?

A:
different meanings