grinds

Reduces something to small particles or powder by crushing it forcefully.

"The machine grinds coffee beans every morning."

Periods of hard, tedious work or study, often referring to a routine.

"The daily grinds of life can be exhausting."

Works hard and continuously, often in a tedious or difficult manner.

"He grinds away at his studies all night."

(British English) Private tutoring sessions, especially for exam preparation.

"She took extra grinds for her maths exam."