Scripturally speaking, we know that apostleship was one of the most important offices in the early Church:
28 And God has appointed in the church first apostles, second prophets, third teachers, then miracles, then gifts of healing, helping, administrating, and various kinds of tongues [1 Cor 12:28 ESV]
11 And he gave the apostles, the prophets, the evangelists, the shepherds and teachers, 12 to equip the saints for the work of ministry, for building up the body of Christ, [Ephesians 4:11-12 ESV]
19 So then you are no longer strangers and aliens, but you are fellow citizens with the saints and members of the household of God, 20 built on the foundation of the apostles and prophets, Christ Jesus himself being the cornerstone, [Ephesians 2:19-20 ESV]
11 I have been a fool! You forced me to it, for I ought to have been commended by you. For I was not at all inferior to these super-apostles, even though I am nothing. 12 The signs of a true apostle were performed among you with utmost patience, with signs and wonders and mighty works. [2 Cor 12:11-12 ESV]
However, the term "missionary" is not strictly speaking a Biblical term (as far as I'm aware), and it typically denotes someone who is sent somewhere (usually an unevangelized area) to carry out some specific service(s) related to the expansion of God's kingdom. However, the concept of apostle is also sometimes more loosely understood as "sent one", which to my ears sounds pretty much the same as a missionary, so the distinction between the two terms becomes a bit blurry.
What is the difference between an apostle (as understood by the early Church, and as recorded in Scripture) and a missionary according to Pentecostal & Charismatic Christianity?