SEO Vs Sem

SEO vs Sem Comparison

Basis for comparison SEO SEM
Expands to Search Engine Optimization Search Engine Marketing
Meaning It is a method used for maximising the number of visitors of a website by ensuring the higher position of the site by optimising the search. It is an online marketing technique which involves promotion of the website by increasing visibility of the site in SERPs with the help of optimisation and advertising.
Relationship SEO is a part of SEM. SEM is a broad term used for traffic generation and is a superset of SEO.
Traffic Volume Controllable Obscure and long-term
Search type Natural (Organic) Paid
Cost Inexpensive Expensive