Colon: 

Using a colon---much like the actual organ---functions like a connection, the first statement directly linked to what comes after.

Ex: There are three elements of creative writing in this guide: grit, balance, and voice.

or

Ex: Three rules to putting out a fire: stop, drop, and roll.

Semi-colon:

A semi-colon links two independent clauses that are closely related. 

How is a semi-colon different from a colon? It's in the name. Instead of a direct connection, think a close relationship; a cousin verse a sibling. 

Ya'll catch that?

See how I used a semi-colon to link the two sentences? If I had restated my definition, I could have used a colon.

Ex: Think a close relationship: cousin, sibling, or parent.

In creative writing, we are more likely to link for effect or imagery's sake using semi-colons instead of make lists.

Ex: Amy is a morning person; Sally is not.

*Capitalize the first word after a semi-colon only if it is a proper noun or acronym. (Same with a colon.)

Use semi-colons when a period isn't strong enough!

(Remember my Wattpad peeps, these are simple examples meant to guide you in the right direction of better grammar. More importantly, having a firm grasp of basic punctuation shows a level of understanding and commitment to those professionals you wish to work with in the future.)

NEVER STOP LEARNING!