Step 1: Definition of Advertisement
Advertisement is a form of mass communication used to promote products, services, or ideas to a large audience through various media such as TV, radio, newspapers, and the internet.
Step 2: Definition of Personal Selling
Personal selling involves direct interaction between a salesperson and a potential customer with the aim of making a sale. It is a one-on-one approach.
Step 3: Key Differences
Medium: Advertisement uses mass media, whereas personal selling involves face-to-face interaction.
Scope: Advertisement targets a broad audience, while personal selling is targeted at individual customers.
Cost: Advertisement typically has a higher cost due to mass reach, while personal selling involves a more personalized and often lower cost approach.
Personalization: Personal selling allows customization of the message to suit the needs of each customer, unlike advertisements, which are more general.
Step 4: Conclusion
While both advertisement and personal selling are essential, their methods and costs differ. Advertisement is used for mass communication, while personal selling focuses on individualized communication.
Final Answer:
\[
\boxed{\text{Advertisement is mass communication, while personal selling involves direct, personalized interaction with customers.}}
\]