What are the differences and similarities between a flu and a cold?

Are they both viruses?
How common are they?
Whats influenza got to do beside it?
Answers:
both of them are the same entity :-)
Flu is short form of truism influenza.

Flu is seasonal...so yes, it is common.

There are many types and forms, caused by a mixture of strains of viruses. So to know the exact statistics, look up the information once you know which type of strain you want to know about.

Influenza is caused by virus, so is cold, but different kinds.
Cold is mostly a simple term to define upper respiratory system disease.

Flu and cold are diseases...bot virus...they are caused by viruses. Source(s): lab research.
both of them are very common, influenza is one of the viruses cause them, others like adenovirus, and respiratory scincitial virus, and the recently discovered meta pneumovirus, the word "cold" is not scientific, and it can be used for allergic conditions Source(s): (a)j

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