1 to work together (with someone) on a piece of work: “He and his brother collaborated on a book about aeroplanes.”
samenwerken

2 to work along (with someone) to betray secrets etc: “He was known to have collaborated with the enemy.”
collaboreren

col'labo'ration (Zelfstandig naamwoord)

samenwerking, collaboratie

col'laborator (Zelfstandig naamwoord)

medewerker, collaborateur
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Vraag professionele hulp bij het schrijven van zakelijke, academische of persoonlijke teksten in het Engels door native speakers.

to collaborate	coöpereren (ww.) ; samenwerken (ww.)
collaborate	samenwerken

Bronnen: interglot; Download IATE, European Union, 2017.