What's the difference between 散伙 and 分手？

分手：break up,do not stay together anymore.

example: 他们分手了。------they broke up.

散伙：the company closes down or ppl don't stay together anymore. 

example：他们公司散伙了。------their company closed down.

分手means break up, between boyfriend and girlfriend
散伙can be used in any situation

They have one thing in common, apart

分手：to part company/to split up/to break up，usually used for boyfriend and girlfriend

散伙：to disband/(of a partnership, group etc) to break up