This is the 2348th most frequent German word.
langer
"Langer" in German means "longer" (comparative of "lang," meaning "long").
The word 'langen' here modifies 'Mantel,' indicating the coat's length in the accusative case due to the verb 'trägt.'
Er trägt einen langen Mantel.
He is wearing a long coat.
The word 'lange' describes 'Reise,' expressing its extended duration and agrees with its nominative and feminine form.
Die lange Reise war sehr anstrengend.
The long journey was very exhausting.
The word 'lange' modifies 'Weg,' aligning with the masculine gender in the nominative case, denoting the path's distance.