One small word, one big difference in meaning

Vocabulary

leap
verb ( MOVE SUDDENLY ) /liːp/ v (leapt or leaped, leapt or leaped)
[I + adverb or preposition] to make a large jump or sudden movement, usually from one place to another
He leapt out of his car and ran towards the house.
I leaped up to answer the phone

quote
verb ( SAY ) /kwəʊt//kwoʊt/ v
• [I or T] to repeat the words that someone else has said or writtenHe's always quoting from the Bible.
"If they're flexible, we're flexible", the official was quoted as saying.

momentous
adjective /məˈmen.təs//-t ̬əs/ adj
very important because of effects on future eventsthe momentous news of the President's death
Whether or not to move overseas was a momentous decision for the family.

mankind
noun /mænˈkaɪnd/ n [U] (also humankind)
the whole of the human race, including both men and women.
Mankind has always been obsessed by power.

vindicate
verb /ˈvɪn.dɪ.keɪt/ v [T] Definition
• to prove that what someone said or did was right or true, after other people thought it was wrong
The decision to include Morris in the team was completely vindicated when he scored three goals.

relieved
adjective /rɪˈliːvd/ adj Definition
happy that something unpleasant has not happened or has ended[+ to infinitive]
I'm so relieved to find you - I thought you'd already gone.
He was relieved to see Jeannie reach the other side of the river safely.
[+ (that)] I'm relieved (that) you didn't tell her.