Difference between farmyard manure and compost manure?

Manure is manure is manure. Humanure, cow manure, horse manure, it's all poo. Compost manure is just manure that's been composted (left to rot and break down).

Most manure starts off hot, literally, it heats up as it begins to break down. You don't want to put that on your plants, because it's too strong. You want to compost it first. Let it sit for a year and then use it.

The only "cold" manures that I know of are rabbit and worms. You can take it straight from their enclosures and put it directly in your garden. Bird droppings might be cold too, but I'm not positive on that.