Solitude is the state of being alone or on your own. It also is a place where you can be on your own.
The act of isolating:
Lonely grief; misery
An interval or space that separates; a gap:
Find another word for loneliness. In this page you can discover 25 synonyms, antonyms, idiomatic expressions, and related words for loneliness, like: solitude, isolation, desertedness, despair, solitariness, aloneness, desolation, self-loathing, sorrow, forlornness and homesickness.