Should you have two separate pages for synonym keywords?

[ProjectLabs]

Suppose that you want to rank for two keyword phrases that mean the same thing but are slightly different in spelling.

When should you put both keyword phrases on one page versus two pages? What are the pros and cons?

[KaneJamison]

Are we talking "acupuncture" vs "acupuncturist", or are we talking "truck for sale" vs "pickup for sale"?

More context along those lines would help in answering the question. In both situations you'll need to approach it based upon the keyword difficulty combined with a manual assessment of what's going on in the actual search results. If you search for "pickup for sale" and there are results showing for "trucks for sale", then you can be more liberal with your use of synonyms on the same page.

[vmialik]

In this case you want to do your research first.  Use Google search and see how it reacts to your two keyword phrases as Google is becoming smarter and smarter with things like synonyms.  It might be that both keyword phrases produce same results, if so go with the most correct understanding of the keyword phrase and choose one page. In that case choosing two pages can also split authority of one page if Google interprets those two keywords identically.

For more info: http://searchengineland.com/is-googles-synonym-matching-increasing-how-searchers-and-brands-can-be-both-helped-and-hurt-131504

Hope this helps