Compound words make up a significant portion of English words used in everyday conversation. They consist of two different words with completely different meanings. For example, the word cupcake consists of cup + cake.
Usually, these words become compound nouns. However, this is not always the case. Compound words can also be adjectives; fire-resistant, high-speed, etc.
When it comes to writing compound words, there are different ways to do it; We can write compound words as separate words, as a single word, or with a hyphen between two words.
Examples of Compound Words:
Foot + Ball ⇒ Football
Jelly + Fish ⇒ Jellyfish
Head + Ache ⇒ Headache
Traffic + Jam ⇒ Traffic Jam