What is the Difference between apostle and disciples?

Disciples are learners or pupils and apostles are sent on behalf of another.

Additional information:

The Hebrew Word for 'disciple' (limmudh) refers to a person who is learning, being taught, or trained. A related Word (malmadh) means a "goad", a long sharp stick used to train cattle. (Judges 3:31;Hosea 10:11.) In Greek the Word for disciple, "mathetes", denotes a person who directs his mind to something.(Luke 6:13) .

'Apostle' (apostellei), on the other hand, means 'a sent-forth one'. Jesus chose twelve specific people out of his group of disciples and called them 'apostles' that they might continue with him and that he might send them out to preach..."(Mark 3:13-14)(Matthew 10:1-42; Luke 8:1) These twelve were STILL 'disciples', (Jesus' pupils), (Mathew 11:1; 20:17; John 20:2) , but they were consistently called "apostles" because, though ALL Christ's disciples were to preach about God's Kingdom(Luke 10:1-12, Matthew 28:19+20), the APOSTLES took the lead in the work Jesus directed. (Matthew 11:1). Because people are given these different gifts and responsibilities, God's organization is well structured and effective(Ephesians 4:11-12)(Matthew 24:14).