宁
JLPT HSK 5

níng
Top: roof 宀, below: nail 丁
(There is no risk that the building might collapse:) When the roof is built with nails, you have peace.

	拧
JLPT HSK 6

níng, nǐng, nìng
Left: hand 扌, right: peace, calm 宁 (If the roof 宀 is built with nails 丁, you have your peace.)
If the hand is covering 宀 and acts like a nail, it pinches.

	狞
JLPT no HSK

níng
Left: wild animal 犭(dog on hind legs), right: peace, calm 宁 (If the roof 宀 is built with nails 丁, you have your peace.)
A wild animal that (pretends) to be peaceful is: malevolent.

	泞
JLPT no HSK

nìng
Left: water 氵, right: peace, calm 宁 (If the roof 宀 is built with nails 丁, you have your peace.)
When water finds its 'peace' (= it is resting), is becomes: muddy.