Hi ramitaherwahdan1978,
md-button
The md-button, an Angular Directive, is a button directive having optional ink ripples (and are by default enabled). If href or ng-href attribute is provided, then this directive acts as an anchor element.
For more detail on how to use how to use md-button in angular please refer link below
https://www.tutorialspoint.com/angular_material/angular_material_buttons.htm
md-icone
To include icons in your webpage, you can use mat-icon directive. Previously it was known as md-icon. It is better to use mat-icon as they serve SVG icons i.e. vector-based icons which are adaptable to any resolution and dimension, on the other hand, raster-based icons have a fixed pattern of dots with specified values and if resized, the resolution changes.
For more detail on how to use how to use mat-icon in angular please refer link below
https://www.geeksforgeeks.org/how-to-use-mat-icon-in-angular/
