Why does this keyword have much greater volume in Bing Keyword Research Tool than Google AdWords Keyword Planner?

[Kevin_P]

I'm using the Google AdWords keyword planner and Bing Webmaster Keyword Research tool. For both, I'm trying to get accurate search volume for the exact term "advertising sales".

Over the last thirty days, Bing reports a volume of  5,988. Google's average monthly search volume is 880. Given the market share Google has, I would expect a much higher volume, especially when compared to Bing. Can you offer some ideas of why this might be happening?

[SEO5Team]

Hi Kevin,

Google's tool only give exact match search volumes whereas Bing includes broad phrase and exact match results. This might be the cause for the discrepancy in volumes. Google's data being displayed in the keyword tool might not be that current.

Cheers,

SEO5..

[Kevin_P]

I appreciate the reply, but I'm comparing Bing exact match to Google exact match, so that wouldn't be the cause for the discrepancy.

[Kevin_P]

Update: I checked exact match search volume on Bing using the past 30 days and on Google AdWords keyword planner using average monthly searches. For "advertising sales", Google gives me 480 and Bing gives me 11,224. Can someone offer ideas of why the issue is continuing?