pełnia

1. fullness (state in which nothing is missing)
2. apex, apogee (highest degree or intensity)
3. full moon (phase of the moon when it is in opposition to the sun and its full disc is therefore visible)
4. full moon (moon when it is in opposition to the sun)
5. (obsolete) whole number; complete set
6. (obsolete) open water (wide, far off water as opposed to water by the shore)

pełnić

to carry out, to fulfil, to perform