What are the nouns in this sentence?

The sink still has a leak

sink, leak

The nouns in this sentence are:

- Sink
- Leak

To identify the nouns in a sentence, you need to look for words that represent people, places, things, or ideas. In the given sentence, the nouns are:

1. Sink - a thing
2. Leak - a thing

In this case, both "sink" and "leak" are the nouns as they represent objects or things.