This is the 9180th most frequent German word.
lüge
Lie.
In this sentence, 'Lüge' is used as a noun to denote an untruth or false statement.
Das war keine Lüge, sondern die Wahrheit.
That was not a lie but the truth.
Here, 'Lüge' is applied to express the concept of deception in a general statement.
Eine Lüge kann oft mehr schaden als die Wahrheit.
A lie can often cause more harm than the truth.
In this case, 'Lüge' refers to a specific false claim communicated by someone.