Sorry it's taken me a while to respond...super busy the past couple of days.
In the United Methodist Church, we generally use Reverend whether we are ordained Elders, ordained Deacons, or Licensed Local Pastor. If actually serving as a pastor, many will choose to use Pastor as a title vs. the more formal Reverend much of the time. Sometimes people will call you Preacher or the Minister as well.
I would be HIGHLY disturbed if anyone ever called me "Mother" or "Father", which would imply a hierarchy among believers, and God is to be one's only spiritual authority. We are called to *serve* our congregations as servant-leaders, not dominate over them or treat them as our children.
We aren't priests because the only mediator between us and God that we acknowledge is Jesus Christ, who is our high priest. We do not need to go through another human being for things, but can go directly to God, no matter whether we are paid clergy or a lay person with no formal leadership role or a child who has not yet confirmed his or her beliefs.
As for what Pastors do, much will be determined by the church. In smaller, rural churches, you may do a bit of everything along with the more typical preaching and visitations. You probably aren't going to have a church admin, so you may end up doing the bulk of the administrative work along with regularly meeting with the different church committees (finance, trustees, etc.) You may be doing the bulk of the worship services, not only preaching, but prayer, liturgy, scripture reading, the youth/children's sermons (which take separate preparation time), and leading the hymns/music (with or without musical accompaniment.) Of course, there is communion, baptisms, weddings, and funerals, doing invocations for community events, participating in both church and community events, other special services, bible studies, confirmation classes, and anything and everything church related that I have left out.
A larger less rural church may have more of the above activities divided up between Pastor(s), Youth/Music directors, and lay leaders, and any other laypersons who have stepped forward to lead a ministry.
As a Pastor, people will both love and hate you and everything in between based on all sorts of different conditions.
As a Student Pastor or Licensed Local Pastor, you may be taking classes or doing prep work for them as well.
There are also various seminars, district meetings, and other things that come up that are required or highly encouraged.
If you are part-time and do not live in the community you are serving, travel time is also a factor.