This is the 5526th most frequent German word.
berufs
"Berufs" means "professional" or "occupational" in English.
In this sentence, 'berufliche' is the adjectival form relating to 'Beruf', indicating matters associated with one's profession or career.
Er ist wegen beruflicher Verpflichtungen verhindert.
He is unable to attend due to professional obligations.
In this case, 'Berufslaufbahn' uses 'Berufs' as a prefix to 'Laufbahn', forming a compound noun indicating a career path in a professional domain.
Sie strebt nach einer erfolgreichen Berufslaufbahn.
She aspires to a successful professional career.
Here, 'Berufsqualität' combines 'Berufs' as a noun form denoting 'professional' with 'Qualität', referring to aspects of professional attributes or standards.