täällä

here(adverb)

(at, in or to) this place

He's here; Come here; He lives not far from here; Here they come; Here is / Here's your lost book.

hei

here(interjection)

a shout of surprise, disapproval etc

Here! what do you think you're doing?

tässä

here(adverb)

at this time; at this point in an argument

Here she stopped speaking to wipe her eyes; Here is where I disagree with you.

paikalla

here(interjection)

a shout used to show that one is present

Shout `Here!' when I call your name.

vieressä

here(adverb)

beside one

My colleague here will deal with the matter.