Is free apps considered as commercial use? topic

Hello friends,

I want to ask if free apps which are monetized by admob considered as commercial use or no ?

I mean i publish some apps on google play for free but i monetized it by admob but sometimes i need to use some icons or images from the web in these apps and i find the license of these images is (Commercial use : Not Allowed).

So can i use it as i publish these apps for free ?