They are progress centred - wanting increased knowledge or expertise in a field. They teach their students until they grasp concepts or gain an understanding. A teacher or educator is a good example of a guide. This is perhaps the best understood role in the church. Teaching occurs in Bible studies, small groups and regular fellowship meetings.
Teaching is a role played by many kinds of leaders, including consultants and advisors.
A coach is one who trains, prepares and instructs others. They hold another accountable to commitments, schedules and important matters. They advise when necessary and point out deficiency. They mentor, or point the way. They map out, plan and develop with another.