cosmos
/kŏz′məs, -mŏs″, -mōs″/
noun
- The universe regarded as an orderly, harmonious whole.
- An ordered, harmonious whole.
- Harmony and order as distinct from chaos.
Space vs Cosmos: what's the difference? If I had a category on my news site dedicated to astronomy, would I have named it "Space" or "Cosmos"?
synonyms - What's the difference between the universe and the cosmos? - English Language & Usage Stack Exchange
what's the difference between universe and cosmos ?
cosmos vs kosmos?
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In technical (astrophysics) usage no.
There are a number of different uses of universe but cosmos isn't used as a specific technical term. Cosmos is sometimes used in popular works as a homage to Carl Sagan's famous TV series.
Cosmological is used as a technical term, eg. Cosmological constant, Cosmological redshift - because using "Universal" would be confusing.
Universe means "the whole world" or "all taken collectively".
While Cosmos comes from the Greek Kosmos (from the OED: κόσµος - order, ornament, world or universe (so called by Pythagoras or his disciples ‘from its perfect order and arrangement’).
Cosmos is the opposite of Chaos, which was the first state of the universe.
Nowadays they are used like synonyms; they refer to the same thing, but seen from different "point of views".