This is the 15757th most frequent Polish word.
szpinak
Spinach.
The word 'szpinak' is used here as a noun referring to the vegetable, spinach, implying consumption.
Uwielbiam jeść świeży szpinak.
I love eating fresh spinach.
Here, 'szpinak' is used as the subject of the sentence, highlighting its nutritional qualities.
Szpinak jest bogaty w żelazo i witaminy.
Spinach is rich in iron and vitamins.
In this context, 'szpinaku' is the genitive form of 'szpinak', used to indicate part of the salad's ingredients.