Experts please answer

Dear Student,        
Here is your answer:
                             
a. audience- common
    musicians- common
b. Environment Council- proper
    meeting-common
    Friday-common
    month- common
c. Robinson Crusoe- proper
    characters- common
    courage-abstract
    resilience-abstract
d. electricity- common
    lives-common
e. brilliance-abstract
    diamond-concrete
    ring-concrete

Hope this information will clear your doubts about the topic.

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