What tools and metrics do you use to show a topic's search interest over time?

[DigitalDivision]

I have a foundation repair client that is down in leads for the structural repair portion of their business. They have not lost any major rankings, but leads are down compared to last year. They asked if people are searching for this type of work less this year compared to last. I checked Google Trends and Keyword Planner data but found very different results. Is either of these tools accurate, or is there a better tool to use?

[effectdigital]

Can you share the example keyword so we can compare for ourselves within the specified tools?

[DigitalDivision]

I was looking for 'foundation repair'