Here are some examples:
* Teenage: Refers to the period of life between the ages of 13 and 19.
* Middle-age: Refers to the period of life between the ages of 40 and 65.
* Old age: Refers to the later period of life, typically after 65.
You might also see "age" used as a suffix in some less common or technical terms, like:
* Stone Age: A prehistoric period characterized by the use of stone tools.
* Iron Age: A period in human history marked by the use of iron tools.
* Space Age: An era characterized by technological advances in space exploration.
It's important to note that "age" is often used in combination with other words to form compound nouns, such as:
* Golden age: A period of great prosperity or achievement.
* Dark age: A period of decline or stagnation.
* Ice Age: A period of glacial expansion.
Let me know if you'd like to explore any of these examples further, or if you have other questions about the use of "age" in words.