Why do public companies give guidance in quarterly reports?

Guidance is a company’s public estimates of its current-quarter and future earnings outlook. Earnings guidance is used by investors and analysts to adjust their expectations for a company’s share price. Guidance figures can be missed, manipulated, or misunderstood, so they must be given their due diligence.

What is the difference between suspending?

A mixture is a physical combination of two or more substances in the same or different states.
Difference between Suspension and Emulsion.

Suspension	Emulsion
Solid particles are dispersed in any medium, that can be solid, gas or liquid	Both dispersed phase and the dispersion medium are liquid