jalāsa and anlāsi

jalāsa

This is the word for a greeting or welcome.

anlāsi

This is the collective form, which is used far more often. It can refer to a set of greetings, or it can be the greeting itself.

selre anlāsi;
I give you greetings.

λi tērranni selirte anlāsi;
Greetings, Earthlings!
(or more literally, “Terrans, I give you(pl) greetings.”)