Conversation so far:
where is the nerve cord located in an insect
Insects have a nerve cord which runs along the length of their body.
what does the nerve cord of insects consist of
The ventral nerve cord consists of a brain, a part underneath the brain called the sub-esophageal ganglion, and a cord that runs along the length of their body.

Question: how is it different from a spinal cord
Self-contained rewrite: how is an insect's ventral nerve cord different from a spinal cord