Noun
nook - Small area or space, like an alcove, that is conducive to meditating, reading, relaxing or quietly reflecting.

The alcove at the large window made a perfect nook, where Gemma could quietly take time away from the family, to read her book or write in her journal without interruption.
paradox - A situation or idea that seems strange because it involves two aspects that are very different and seem to contradict each other, and both may be true.

It's a paradox that often it's the busiest people that have to most time to contribute to the needs of others.
wedge - A piece of material with a thick end that tapers to a thin edge, used to split, support, or secure things; also something that forces separation or division between people or groups.

The disagreement drove a wedge between the two longtime friends, and they really didn't enjoy spending time together anymore.