As followers of the teachings of Christ, the two sort of go hand in hand. "Pray without ceasing..." and all.
they go to church, read the bible etc.
Well Christians pray go to church and even just send thoughts to him.
Just like Christians, Muslims, and followers of several other religions, Bahá'ís believe in a single God, which they simply call "God", if they happen to communicate in the English language.
Roman Catholicism would hold that, while we can address our guardian angels, they do not communicate with us. The angels who are mentioned in the Bible as having addressed people did so at God's behest. The people did not initiate the communication.
they pray to communicate with God
Christians relationship with god i to let him be your savior
True Christians prove their devotion to God by obeying God in the spirit.
pray to god
It is God who decides who he wants to communicate with.
Christians believe him to be God and therefore worship him as God.
Depending on the context, it either means that somebody is talking about an object which purportedly helps you communicate with God, or that in the past, a person regularly communicated with God.
The Holy Bible is from God. God love Christians and Christians love God.