acknowledgment
/ɪkˈnɑːlɪʤmənt/
noun
also acknowledgement , pl -ments
the act of acknowledging something or someone: such as
the act of showing that you know, admit, or accept that something exists or is true [count]
the act of praising or thanking someone for an action or achievement [count]
acknowledgments [plural] :a section of a book, article, etc., in which people are thanked for their help
[count] :a usually written statement saying that a letter or message was received