Pitch in and Take the bull by the horns

Pitch in verb - To make a donation as part of a group effort.

Take the bull by the horns and pitch in are semantically related In some cases you can use "Take the bull by the horns" instead a verb "Pitch in".

Take the bull by the horns verb - Face a difficulty and grapple with it without avoiding it.

Pitch in and take the bull by the horns are semantically related in work very hard topic. Sometimes you can use "Pitch in" instead a verb phrase "Take the bull by the horns".