The word Aztecs is a proper noun, because it is a name of a certain nation.
Common nouns are words such as table, chair, desk, etc. Compound noun is just a noun that has more than one word, such as brother-in-law. Collective noun is a noun such as deer, sheep, etc.
What is it that you need help with?
Its a simile that this person is trying to explain to the reader, the person who wrote this referring to the fact that the guns looked like a small creature, this states that the fact that the guns looked like tiny insects, the reader has to read on to find out what the author is trying to explain to the reader.
You need to read on or if no more text to read, all you can say is that the author says that machine guns looks like tiny insects from their perspective.
Hope this helps!
Tectonic plates are more common in California
Answer:
phone restrictions banned
military gets a raise
free food for everyone