Learn Romanian: Supermarketul are o parcare mare. - The supermarket has a big parking lot.

In Romanian, the definite article (the word for 'the') attaches to the end of the noun. Because supermarket is a neuter noun ending in a consonant, it takes the ending -ul to become supermarketul (the supermarket).

Does are mean the same thing as the English word 'are'?

No, they just look alike! In Romanian, are is the 'he/she/it' form of the verb a avea (to have). Here, it translates to 'has' because the supermarket is an 'it'.

Why is it o parcare mare instead of o mare parcare?

In Romanian, descriptive adjectives like mare (big) almost always come after the noun they describe. You literally say 'a parking lot big'.

Parcare is a feminine noun. Does the adjective mare need a special feminine ending?

No, mare stays exactly the same here! While many Romanian adjectives change endings based on gender, adjectives that end in -e in their basic form (like mare) are identical for masculine, feminine, and neuter singular nouns.