Final answer:
Water is polar and can form hydrogen bonds, which allows it to interact with other polar substances, termed hydrophilic. Non-polar substances that repel water are called hydrophobic. Water itself is not hydrophilic or hydrophobic; these terms describe interactions with water.
Step-by-step explanation:
Water is described as a polar substance due to the polar covalent bonds between its hydrogen and oxygen atoms. This polarity allows water molecules to engage in hydrogen bonding with each other as well as attract other polar molecules and ions. Substances that interact well with water due to their polarity are termed hydrophilic ("water-loving"), whereas non-polar substances like oils and fats that repel water are known as hydrophobic ("water-fearing"). Water itself is not classified as either hydrophilic or hydrophobic as these terms are used to describe how other molecules interact with water.