The meaning of “Na” is to represent something with with an adjective.

Example
Quiet Garden – Shizuka na kouen desu
Beautiful Flower – Kirei na hana desu
Famous Person – Yuumei na hito desu
Kind Police – Shinsetsu na omawarisan desu
Convenient Shop – Benri na omise desu

Meaning : Shizuka (Quiet), Kouen (Garden), Kirei (Beautiful), Hana (Flower), Yuumei (Famous), Hito (Person), Shinsetsu (Kind), Omawarisan (Police), Benri (Convenient), Omise / Mise (Shop)

Understanding of Words

Fine / Healthy
Polite
Unique / Skillful / Proficient
Unskillful / Poor
Tasteless
Delicious
Like (Love)
Genki
Teinei
Tokui / Jouzu
Nigate / Heta
Mazui
Oishii
Suki