Stacks can be a verb which means to put on top of each other or a noun which means piles. Example: She stacks the papers. There are stacks of books on the shelves.
Towered can mean to stand tall over. Example: Jessica towered over me because of her tall height.
Creaked is a small squeak sound. Example: The old door creaked open.
Anxiously means nervously. Example: The student anxiously accepted her test paper.
Stranger means a person you do not know. Example: A stranger is following you.