Is there a difference between a Content Strategist and a Technical Author?

What’s in a name – at this week’s Content Strategy Meetup, which unfortunately I missed due to illness, a number of the attendees and speakers came from the technical communications community. They were Technical Authors/Documentation Managers or had a background as a Technical Author.

So are Technical Authors and Content Strategists one and the same thing? Do they require the same skill set? Do they look at the same type of content? Is the only difference the salary levels?

What do you think?