Q: Does "work" have the same meaning in the following two sentences?

I will work hard to improve my grades.

They worked at finishing the task.

A: the same meaning

Q: Does "head" have the same meaning in the following two sentences?

They shot 20 head of quail.

200 head of cattle.

A: the same meaning

Q: Does "slip" have the same meaning in the following two sentences?

He blamed his slip on the ice.

The jolt caused many slips and a few spills.

A:
the same meaning