Sopot is an old Slavic word which means "spring" (source).

The island's name derives from the slavic word for "flat field".

The name is derived from the Slavic word *dręzga 'forest, thicket'.

In contradiction to that, there are many Christian and Slavic words.

If it is considered to be a Slavic word, it may mean either "beginning" or "border".

However some also trace the name back to the Slavic word for miserable or meagre.

Some Slavic words can be heard in the background, but are not used in the main dialogues.

Many Slavic words related to politics, law, and agriculture were taken into the Hungarian language.

Radu, a name derived from the Slavic word for "joy".

So if the grammar is unique, the vocabulary has absorbed many Slavic words.