Semicolon

Semicolon is used in following conditions:

To separate 2 closely related sentences.
Example:
Women's conversation is cooperative; men's is competitive.

A semicolon is often used before adverbial conjuncts such as however, on the other hand, otherwise, etc.
Example:
We'll fight the eviction; otherwise we'll be homeless.

To separate elements in a series when the elements are long or complex, or when they include other punctuation marks (especially commas):
A study was done; next, an interactive consultation; and lastly, a digital terrain model was introduced.