is a minute portion of matter or another term for subatomic particle or smaller than an atom. Quantum particles can be a particle or a wave. The particle is what is actually observed, while the wave function serves merely to guide the particle. Physicists can prepare a wave function so they know it exactly, but can only learn about the hidden variables by observing the wave.
Superposition is a single system so it is never entangled.
Quantum entanglement is known to be the exchange of quantum information between two particles at a distance. is a physical phenomenon that occurs when pairs or groups of particles are generated, interact, or share spatial proximity in ways such that the quantum state of each particle cannot be described independently of the state of the others, even when the particles are separated by a large distance.
Quantum superposition is known to be the uncertainty of a particle (or particles) being in several states at once (which could also involve the exchange of quantum information for a particle that is known to be in several locations simultaneously
An entangled superposition. In each part of the superposition, the object has a definite measurement outcome and the observer has measured that outcome.