A polymer molecule is a macromolecule.
Plastic is a large molecule called a polymer, and it's always a compound.
A molecule made of many repeating parts is known as a polymer.
Carbohydrate
During the construction of a polymer, a molecule of water is typically released in a process called dehydration synthesis or condensation reaction. This reaction links monomer units together to form a polymer chain by removing a water molecule for each bond formed between the monomers.
condensation
Glycogen/starch
a monomer
Monomer is the term used to describe the individual molecule that links together to form a polymer chain.
The links in a polymer chain are covalent bonded.
When two or more join together a polymer forms a molecule.
A carbon based molecule is a polymer. Edit: A carbon based molecule does not have to be a polymer, although some polymers are carbon based. For example methane - CH4 is carbon based and not a polymer. Carbon based molecules are called organic compounds.
Fat is a fairly complicated compound: it is composed of a glycerin molecule with 3 fatty acid molecules attached. Each of the fatty acid molecules is composed of a carboxylic acid molecule and a hydrocarbon polymer molecule chain. The hydrocarbon polymer molecule chains can be of any length and either flexible or rigid. The hydrocarbon polymer molecule chains will likely be different in each of the 3 fatty acid molecules in a given fat molecule.