@Majid najafvand derikvand Apologies for the delayed response on this post. As I understand you are suggesting a change in terminology for the guest accounts from Invited user to Associate User within the Azure/Entra ID Portal.
Would suggest you to share your feedback on https://feedback.azure.com/d365community which is closely monitored by our team.
Let me know if you have any further questions, feel free to post back.