HARD (some meanings):
1.
With great effort; with difficulty; force:
You should WORK HARD to prepare for this competition.
He got angry and PUSHED HARD his brother.
2.
In a deeply emotional manner:
He took that news HARD.
3.
A lot or for a long time:
It was RAINING HARD when we saw a little puppy.
I THOUGHT HARD before applying for that job.