This is the 1971st most frequent Russian word.
спасибо
"Спасибо" means "thank you."
The word 'спасибо' is used here as a direct expression of gratitude for the help provided.
Спасибо за помощь.
Thank you for your help.
The word 'спасибо' is intensified by 'большое' to express a stronger sense of gratitude for the received gift.
Большое спасибо за ваш подарок.
Many thanks for your gift.
'Спасибо' is used here conversationally to reciprocate kindness despite the modesty in the situation.