系統

What does 系統 mean in English?

1. system(n)
2. lineage; ancestry; family line(n)
3. group (e.g. of colors) (colours); family (e.g. of languages); party; school (of thought)(n)
4. close (evolutionary) relationship(n)
5. a population sharing a common ancestor (in genetics); strain (e.g. bacterial)(n)