pontiff.
Don't know about one word, but a two word phrase that means exactly the same as "weigh" is "ascertain displacement".
One such word is prattle.
ein und derselbe
"Solution" would be one.
One example is FIRED.
One option is the word briefly.
"Meet the Pope" means simply that one personally meets with the Pope face to face.
One is 'contraband'.
it may be a vale or valley
One word that means the same as boat races is regatta.
One word that means the same thing as energy is "vigor."
Survive Stay