He was responsible for the facilitation of teamwork during the meeting, ensuring everyone communicated effectively.

facilitation 是名词，由动词 facilitate（促进、使便利）加上名词后缀 -tion 构成。facilitate 本身来自形容词 facile（容易的），加上动词后缀 -ate 表示"使变得容易"。facilitation 指"促进、帮助"的过程或行为。