Things here are usually tagged with red stickers. What am I ?

Answer: Clearance

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This on this. That on that. Growing tall, But never fat. What am I?
Though I am dark, Adam married me. What am I?
Though I am only two words, I have thousands of letters in me. What am I?
Though learning has fed me, I know not a letter; I live among the books, Yet am never the better. What am I?
Though liquid in nature, don't push me too far, for then I will break, and the damage may scar. What am I?
Three or four, I can stab through or rule the seas. You know my cousins. What am I?
Tick, Tock, the clicks of a clock, moments pass as it never stops. One moment one, one moment ten, moments rush until I initiate the end. What am I?
To cross the water I’m the way. For water I’m above I touch it not, and truth to say, I neither swim nor move. What am I?
To throw me, you’d prefer a crowd what am I?
To unravel me, you need a key. No key that was made by locksmith's hand, but a key that only I will understand. What am I?
Tool of thief, toy of queen. Always used to be unseen. Sign of joy, sign of sorrow. Giving all likeness borrowed. What am I?
Travel a mile and I will change, travel a million and I will end as I started. What am I?