Can anyone please tell me what is the difference between ZLOTY AND ZLOTYCH - POLAND [gelöst]

One is singular the other plural.

Polish is an inflecting language, meaning that words change their form depending on grammatical case, gender, number, person.

The word 'złoty' is and adjective meaning 'golden'.

• złoty is masculine, nominative case, singular, so it is "1 złoty"
  

Since złoty is the masculine form, it must have been followed by some masculine noun in the past, probably pieniądz. Pieniądz is an early borrowing from German Pfennig, and its plural pieniądze is now the normal Polish word for 'money'.

After numerals 2, 3, and 4, the plural is used:

• złote is nominative case, plural (for all genders), so it is "2, 3, 4 złote"
  

Slavic languages have the habit that higher numbers (5+) are grammatically treated as nouns, followed by the genitive plural (to be paraphrased as 'a 5-er of some things'):

• złotych is genitive case, plural (for all genders), so it is "5, 10, 20 złotych"
  

All Slavic languages show this behaviour apart from Bulgarian and Macedonian (which lost most of their nominal inflection in history). Bulgarian has a separate 'count' word form (different from the plural) for masculine words used after all numerals higher than one.

Russian, Belorussian, and Ukrainian stand out in that the numerals 2, 3, and 4 are followed by nouns in the genitive singular(!) and adjectives in the nominative or genitive plural following some highly peculiar rules.

Can you also tell me what groceries can I buy with a 10000 zlotych coin in Poland

10 000zl coins are legal tender, but not circulating in Poland.

It's easy to find exchange rates on the internet.

What you can buy with it:
https://www.biedronka.pl/pl/w-tym-tyg-14-10

Can i exchange that 10000 ZLOTYCH coin for 500 zlotych or other lower denominations I. Poland

Can you also tell me what groceries can I buy with a 10000 zlotych coin in Poland
Can i exchange that 10000 ZLOTYCH coin for 500 zlotych or other lower denominations I. Poland

Non and no because they were all demonteized. On 1 January 1995, 10,000 old złoty (PLZ) became one new złoty (PLN)

Ok thanks very much

You should also remember:
Denomination took place on 01-01-1995.
However some new denominated (new) coins were minted before 1995 – and dated from 1990 to 1994.
Therefore there are coins from 1990 till 1994 of both types: before and after denomination!

for example:
1 złoty 1990 – before denomination (demonetized):
https://en.numista.com/catalogue/pieces19847.html
1 złoty 1990 – denominated, current currency:
https://en.numista.com/catalogue/pieces520.html