• 構かまえる — to set up; to position oneself
• 構かまう — to care; to mind
• 構成こうせい — composition; structure
• 構造こうぞう — structure; construction
• 構図こうず — composition (of an image)
• 構想こうそう — concept; idea
• 構内こうない — premises; campus

This character combines 木 (tree) and 冓 (an old form related to assembling). The original meaning was to build something by joining wood together, later expanding to abstract uses like “structure,” “format,” or “take position.” It can also mean “to care” or “to mind” someone’s actions, showing the flexibility of its use.

彼は家いえを 構かまえて、静しずかに暮くらしている。
He built a house and lives quietly.

そんなこと、気きに構かまうな。
Don’t worry about that.