This is the 392nd most frequent Latvian word.
esmu
"I am."
The word 'esmu' here is used as the first person singular form of the verb 'būt' (to be) in the present tense.
Es esmu skolotājs.
I am a teacher.
In this sentence, 'esmu' is again the present tense form of 'to be', here indicating the speaker's presence at the location.
Šeit esmu kopā ar saviem draugiem.
Here I am with my friends.
Here, 'esmu' is used to combine the subject and an adjective that describes the speaker's state.