Difference between liberty and freedom

[Kelly]

Test No. incompl/advan-30 "Letter Writing (2)", question 9

After all why should you two continue to be free and I have to give up my .........?

(a) latitude
(b) liberty
(c) scope
(d) immunity

Test No. incompl/advan-30 "Letter Writing (2)", answer 9

After all why should you two continue to be free and I have to give up my liberty?

Correct answer: (b) liberty
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Dear Alan:
Can you do me a favour explain the differences between these words? As what I know, they are all have the same meaning as "Freedom", but why we must use liberty here but not the another one?
Thanks in advance for your help.

[Alan]

a) latitude
(b) liberty
(c) scope
(d) immunity

Hi Kelly,

(a) means freedom in the sense of being able to do many things without being stopped
(b) means pure and simple freedom
(c) means freedom in the sense of the wide range of possibilities at your disposal
(d) means freedom from either disease or rules and regulations as in diplomatic immunity
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English as a Second Language
You can read my ESL story Subjunctive