Communion depends on the church. Some do it once a month, every fortnight or every week.
The Church of Christ (very conservative) I went to as a kid did it every week. The Presbyterian church I was part of did it once a month. I've been in AOG churches like Hillsong and they do it occasionally. I go to a Uniting church now and they do it fortnightly.
Doesn't really help clarify does it!!!??