Greek kháos (χάος) means ‘emptiness, vast void, chasm, abyss‘;
related to the verbs kháskō (χάσκω) and khaínō (χαίνω), ‘gape, be wide open’,
from Proto-Indo-European *ǵheh2n-,
cognate to Old English geanian, ‘to gape’, whence English yawn. It may also mean space, the expanse of air, the nether abyss or infinite darkness. Pherecydes of Syros (fl. 6th century BC) interprets chaos as water, like something formless that can be differentiated.
The cosmos (UK: /ˈkɒzmɒs/, US: /-moʊs/) is the Universe. Using the word cosmos rather than the word universe implies viewing the universe as a complex and orderly system or entity; the opposite of chaos. The cosmos, and our understanding of the reasons for its existence and significance, are studied in cosmology. It is a very broad discipline covering any scientific, religious, or philosophical contemplation of the cosmos and its nature, or reasons for existing. Religious and philosophical approaches may include in their concepts of the cosmos. Various spiritual entities or other matters deemed to exist outside our physical universe.
In all chaos there is a cosmos,Carl Jung
In all disorder a secret order.