We are developing a SaaS product that can be extended by developing add-ons or plug-ins. We are calling those extensions "skills", exactly the same way Amazon's Alexa calls its extensions. Our product is completely unrelated to Alexa or Amazon, but we started using the "skills" word from the beginning and it stuck.
I've been trying to find through all the Amazon Echo and Alexa legalese but haven't been able to find anything related to using the word "skill" to represent an extension of a software product.
We are a U.S. based company. Could we get in trouble in the future because of this, or is "skill" considered a broad word that we can use without incurring in any trademark violations?