Dairy cows are the type of Brown-Swiss and Holstein breeds where cattle is Angus and Limousin breeds.
Beef cattle is not producing milk, its the type of animal only used to sell, for breeding and beef production (beef production meaning selling cattle for profit).
Dairy cows produce milk, manure and slurry (liquidmanure).
Beef cattle produce manure and slurry (liquidmanure).
Food requirements are the same for both dairy cows and beef cattle, which is Total Mixed Ration (TMR) feed. Beef cattle does live with grass or hay only, but its best to give them TMR.
Beef cattle at age of 18 months are mature and can give birth to offspring.