万歳

1. interjection, noun, takes する, intransitive, celebratory cheer; trad. shouted while raising both arms in the air banzai; hurray; hurrah; hooray
2. noun something to cheer about; something worthy of celebration
3. noun, takes する, intransitive giving up; throwing one's hands up
4. noun eternal life and prosperity

よろずとせ also 万年

1. noun ten thousand years; eternity
2. prefix perennial; perpetual

まんざい

1. noun door-to-door manzai; form of comedy originally performed at people's homes by entertainers during the New Year festivities; precursor to modern day manzai