This is the 60th most frequent Dutch word.
hier
"Here" (in this place).
Here, 'hier' is used to specify the place related to the speaker's living situation, equivalent to 'here' as 'in this place' in English.
Ik woon hier al vijf jaar.
I have been living here for five years.
In this sentence, 'hier' is used to indicate a specific location, meaning 'here' in English.
Hier is mijn huis.
Here is my house.
In this context, 'hier' is used as an interjection to attract attention to something.