Concrete Nouns:
* The *cat* chased the *ball* across the *floor*. (cat, ball, floor are tangible things you can touch)
* She sipped her *coffee* while reading the *newspaper*. (coffee, newspaper are tangible things you can interact with)
* He drove his *car* to the *store* to buy some *groceries*. (car, store, groceries are tangible things)
Abstract Nouns:
* *Love* conquers all. (love is an intangible feeling or concept)
* He felt a surge of *fear* when he saw the *snake*. (fear is an intangible emotion)
* The *painting* captured the *beauty* of the *sunset*. (beauty is an intangible quality)
* *Honesty* is important in all *relationships*. (honesty is an intangible concept)
Let me know if you'd like more examples!