Select two or more specific nouns that belong to the general noun group.

1. a type of tool:
a. ax
b. saw
c. chair
d. hammer

2. A type of material:
a. stone
b. sword
c. wood
d. copper

3. A type of weapon:
a. time
b. knife
c. money
d. sword

4. A type of gadget:
a. laptop
b. cell phone
c. copper
d. camera