My parents used to live in a condominium but they bought a house two years before I was born.
Bob was forced to kick out the jocular man who decided to use the bathroom that read "Do not use!" in the condominium that was for sale.
Jennifer was ecstatic over closing on her new condominium.
Three story, 91000 square foot, condominium complex?
The word condominium is not a proper noun. You did it correctly in your question.
A good way to use retentive in a sentence is... "How do you use the word retentive in a sentence?"
use it by saying- how can you use the word ebullient in a sentence?
Can you use the word concluding in a sentence? Done.
How do you use the word gerontology in a sentence?
How can you use the word infectious in a sentence
You can use the word Truss in a sentence like this.
Just use it! Or do you mean, can you use the word beheld in a sentence.
You can use an underscore to remove a word out of a sentence. It can be placed where the word was.