What is the difference between relative, absolute, and mixed cell referencing and how does it relate to formula parse errors?

Relative referencing (e.g., A1) changes when the formula is copied to other cells. Absolute referencing (e.g., $A$1) remains constant. Mixed referencing (e.g., A$1 or $A1) allows one part to change while the other remains fixed. Incorrect use of these can lead to unexpected results and formula parse errors if the formula isn't behaving as intended when copied.