Q: Does the word "failure" mean the same thing in "That year there was a crop failure." and "He felt that his entire life had been a failure."?

A: the same meaning

Q: Does the word "back" mean the same thing in "He wrote the date on the back of the photograph." and "I hung the clothes on the back of the door."?

A: the same meaning

Q: Does the word "mask" mean the same thing in "They moved in under a mask of friendship." and "No mask could conceal his ignorance."?

A: the same meaning

Q: Does the word "disposition" mean the same thing in "I have little disposition now to do as you say." and "Salt has a disposition to dissolve in water."?

A:
the same meaning