Ranking for ‘Best kw’ vs just the keyword

With the same page can you rank #1 for 'best kw' and just the keyword by itself? Particularly if it is low competition ecom type keyword

Or should a separate page be made for each? like a top 5 best page and then a complete guide to KW page? Maybe making the best page a sub-page of the complete guide

I have one site where i have the homepage with 'best kw' in the title tags and h1. That page ranks #5 for the best and 50s for the plain KW. But another page i made called 'what is kw'…

Ranking for 'Best kw' vs just the keyword