All parts of speech are actually distinguishable, and I like how they're composed. But I like adjectives so much. You can choose a thousands of adjectives to describe how beautiful of a person is. You can describe how amazing learning is.
My lady is walking elegantly tonight in the runway.
(How does she walks? Elegantly.)
(Who's walking elegantly? The Lady.)
(What was she doing elegantly? Walking.)
(Where was she walking elegantly? In the runway.)
(When did she walk elegantly? Tonight.)
Notice how a single sentence can answer to all "WH" and "How" questions. Exactly. It's so beautiful.