* The weather was hot and humid, a stark contrast to the cool, dry air of the mountains. (Hot/Cool, Humid/Dry)
* She was known for her honesty, but her brother was notorious for his deceitfulness. (Honesty/Deceitfulness)
* The movie was a hilarious comedy, but the play was incredibly tragic. (Hilarious/Tragic)
* The old man was weak and frail, but the young woman was strong and robust. (Weak/Strong, Frail/Robust)
Let me know if you'd like more examples!