Difference between Muster Up and Pluck Up

MUSTER UP vs PLUCK UP: VERB

Sinewless, Good part, Unstrength, Strengthful, Fortitude, Revigorate, Strength, Innerve, Sthenic, Sthenia, Courage, Come up, Rally, Summon, Muster

Pluck up, Sinewless, Good part, Unstrength, Strengthful, Fortitude, Revigorate, Strength, Innerve, Sthenic, Sthenia, Courage, Come up, Rally, Summon

How do we muster up the courage to turn down new invitations while still keeping friends close?
Congressmen can muster up against the war in Iraq is tosay let Congress vote on it.
But can they muster up some points on offense against the very stingy Steeler defense?.
Maybe he could even muster up the courage to explain his feelings by then.
Tom Hanks was able to muster up a handful of anecdotes for print.
But TODAY all Old John could muster up was attacks on Obama.
He used pathos to muster up superior performances from ordinary citizen soldiers.
Bill right and muster up strength for him.
You better muster up some will to fight.
Can we pull ourselves together, muster up our civic pride, collective chins up, and move forward?.

Pluck up the weeds and give the plants a fair chance of growth and development.
I pluck up the courage and pull back the curtain again and head out.
At the beginning I had to pluck up the courage to approach other students.
It is the business of every good citizen, to pluck up by the roots such incendiary slander.
Columbo has to pluck up no small amount of courage to bury the hatchet with Mrs Peck.
I am still trying to pluck up the courage to ask for help.
Even if he has Bruja to send, you have some one also: so pluck up your courage!
Instead of that, you should pluck up enough courage to penalise your offender accordingly.
But if they will not hear, then will I pluck up that nation, plucking up and destroying it, saith Jehovah.
Pluck up your spirit, Jon, and break away.