Hi Siebert.
Thank you for reaching out to the Google Ads API support team.
Kindly note that the search terms report provides insight into the searches that trigger your ads and how those searches are performing. Use the search terms report to know how your ads performed when triggered by actual searches within the Search Network. The "Keyword" column in the search terms report tells you which one of your keywords matched someone’s search term and triggered your ad. You can use the data in the "Keyword" column to improve your keyword list. The
search_term_view provides metrics aggregated by search term at the ad group level. The difference between a search term and a keyword is that a search term is a word or set of words that a person enters when searching on Google or one of our Search Network sites.
Whereas a keyword is a word or set of words that Google Ads advertisers can add to a given ad group so that your ads are targeting the right audience. This
keyword_view resource provides data based on your targeted keywords (the keywords you bid on) and how they performed. It shows you metrics associated with the keywords you've set up in your ad groups.
So, the total 'costMicros' will be different in both the reports as they will have the different data and as how Google Ads reports data. I would recommend you to check this Help Center article
About the search terms report for more information.
