What is the relation between chromosomes, chromatin and chromatid?

(PLEASE EXPLAIN IN A EASY TO UNDERSTAND MANNER)

Chromatin:

1. Chromatin is composed of DNA and proteins that condense to form chromosomes.
2. It compresses the DNA structure into a compact unit so that it can fit within the nucleus.

Chromosomes:

1. The DNA is packed into thread-like structures called chromosomes.
2. The DNA is tightly coiled around histone proteins several times to form a chromosome.
3. These are formed by the condensation of chromatin fibres.

Chromatid:

1. A chromatid is one of the two identical halves of a chromosome that has been replicated in preparation for cell division.