No, not really. A realm means a kingdom, a political entity, something much less than the whole world. England is a realm (That is why they have a Defense of the Realm Act.) It only means a general topic ( as in "the realm of literature") in a figurative sense. "World" or "universe" have that meaning also only in a figurative sense.
Yes, the word "universe" can be replaced with "world" in most cases, but keep in mind that they can have slightly different connotations. "Universe" typically refers to all of space and everything in it, while "world" can also refer to a specific planet or to the experiences and perspectives of individuals.
Scientists think there may be another universe or universes beyond ours.The universe is vast and ever expanding. Some people firmly believe God created the universe and everything in it.
Cosmos, in astronomy, the entire physical universe considered as a unified whole (from the Greek kosmos, meaning “order,” “harmony,” and “the world”). Generally speaking, we use the word universe to mean the entire physical universe; a synonym is cosmos.
Universal (pervading the universe) or cosmic(relating to the universe).
The noun 'universe' is a singular, common noun; a word for a thing.The noun 'universe' is an abstract noun as a word for a particular sphere of activity, interest, or experience; a word for a concept.The noun 'universe' is a concrete noun as a word for space and everything that exists in it, including the Earth; a word for a physical place.
Another word for world is universe!
Realm and domain
The word Olam in Hebrew means 'world'. It can also mean universe and realm
Realm.
Area, realm, domain.
In Sanskrit, the word for "world" is " loka" (लोक). It refers to a realm or a place, often encompassing the physical universe and various planes of existence. Another term used is "samasta," which means the entirety or totality of existence. These terms reflect the philosophical and spiritual dimensions of the concept of the world in ancient Indian thought.
The galaxy
As the humans entered the realm of the dragons, they gazed about intently, as if they had entered a different world.
The word for "world" in Sanskrit is "लोक" (loka) or "विश्व" (viśva). "Loka" often refers to a realm or place inhabited by beings, while "viśva" encompasses the idea of the universe or the totality of existence. Both terms reflect the richness of the concept of the world in ancient Indian philosophy and literature.
The prefix "cosm-" comes from the Greek word "kosmos," which means "world" or "universe." It is commonly used in words related to the universe or world, such as cosmology (the study of the universe) or cosmic (relating to the universe).
The root word "cosmo" derives from the Greek word "kosmos," which means order or world. It is commonly used in words related to the universe or world, such as cosmology (study of the universe) or cosmopolitan (relating to a diverse population).
World, universe, eternity = olam (עולם) Planet, world = tevel (תבל)