By symptoms alone is there any relation. One is a mood disorder = Bilolar Disorder.Schizophrenia is a psychotic disorder.
People who have bipolar tend to seem schizophrenic when manic.
Mania only mimics schizophrenia.
The two are still very different.
Schizophrenia does not come in cycles and it also has issues with constant voices sometimes hallucinations, and a skewed touch of what is reality.
Both illness can be treated and those with the illness can lead a good life with a strong support system and meds.