This is the 6406th most frequent Dutch word.
thea
"Thea" is a Dutch feminine given name.
Here, 'Thea.' is being used as a proper noun, presumably the name given to a plant.
De plant in de hoek heet Thea.
The plant in the corner is called Thea.
Here, 'thea' is used as an imaginary or hypothetical substance to be added to tea (illustrative use).
Kun je wat thea toevoegen aan mijn thee?
Can you add some thea to my tea?
Here, 'Thea' is the name of a person, functioning as a proper noun in the sentence.