Final answer:
Absolute age is the actual age of something, while relative age involves comparison. Geologists use both absolute and relative dating methods to study Earth's history.
Step-by-step explanation:
Absolute age is the actual age of something, measured in years. An example of a statement of absolute age is 'I am 35 years old.' On the other hand, relative age involves comparing the age of one object or event to another.
Geologists use both absolute dating, which uses radioactive isotopes to determine the numerical age of rocks, and relative dating, which helps them establish the sequence of events in Earth's history. Both methods have advantages and limitations, and they are used together to create a more complete understanding of geological time.