noun, noun, used as a suffix
General term for an organized group of people working or acting together. Often used as a suffix (e.g., 調査隊, 救助隊).
彼は調査隊の一員としてアマゾンへ向かった。
He headed to the Amazon as a member of the research party.
救助隊が遭難者を探している。
The rescue team is searching for the missing person.
noun, noun, used as a suffix
Military unit; can refer to a specific formation size (company) or more generally to any organized body of troops.
その隊は敵陣に突入した。
The unit charged into the enemy position.
彼は歩兵隊に所属している。
He belongs to an infantry company.
グループ is a general loanword for any group, while 隊 implies a more organized, often mission-oriented or military body.
チーム is used for sports or collaborative work teams, whereas 隊 is more formal and often used for expeditions, rescue, or military units.
The kanji 隊 originally referred to a military unit or formation. The reading たい is the on'yomi. The word is used both independently and as a suffix to form compound nouns denoting organized groups.