Nebula
These are generically referred to as, not surprisingly; 'interstellar clouds'
An interstellar cloud.
An interstellar cloud.
A nebula is a large gaseous cloud found in space. Nebulas are made up of gas, dust, and plasma, and can be remnants of exploded stars or regions of new star formation. They are often exceptionally beautiful and serve as the birthplace of stars.
With all due respect, an interstellar cloud is, by its definition, gas, plasma and/or dust (molecular particulates) in greater quantities than normally found in interstellar space. So, perhaps the answer is No, because there are other elements present.
The material sent into space by a supernova is called supernova ejecta. It includes elements such as hydrogen, helium, carbon, oxygen, and heavier elements created during the supernova explosion.
An interstellar cloud is a vast region in space that contains gas and dust particles. These clouds can vary in size and density, and serve as the birthplace for new stars. They are also important in the formation and evolution of planetary systems.
A large cloud of gas and dust in space is called a nebula. These nebulae are often the birthplaces of stars and planets, with various types such as emission, reflection, and dark nebulae.
Nebula means cloud in latin. If you want a full answer, google it. Then you can get the origins and stuff.
It could be called interstellar space or terrestrial.
The spaceship in the game "Cosmic" is called the Interstellar Cruiser.
Between or among the stars; as, interstellar space.