'Letter' and 'epistle' have the same meaning.
Epistle
Epistles to the Thessalonians written from Corinth. Epistles to the Corinthians. Epistle to the Galations. Epistle to the Romans written from Corinth. Epistle to the Philippians. Epitle to the Colossians. Epistle to Philemon. Epistle to the Hebrews. Epistle to Titus.
She wrote an epistle to her boyfriend.
Epistle to a Godson was created in 1972.
Epistle to the Easterns was created in 1848.
Epistle From Wikipedia, the free encyclopedia:The letters in the New Testament from Apostles to Christians are usually referred to as epistles. Those traditionally attributed to Paul are known as Pauline epistles and the others as catholic (i.e., "general") epistles.Pauline Epistles Epistle to the RomansFirst Epistle to the CorinthiansSecond Epistle to the CorinthiansEpistle to the GalatiansEpistle to the EphesiansEpistle to the PhilippiansEpistle to the ColossiansFirst Epistle to the ThessaloniansSecond Epistle to the ThessaloniansFirst Epistle to TimothySecond Epistle to TimothyEpistle to TitusEpistle to PhilemonCatholic (i.e., "general") epistlesEpistle to the HebrewsEpistle of JamesFirst Epistle of PeterSecond Epistle of PeterFirst Epistle of JohnSecond Epistle of JohnThird Epistle of JohnEpistle of JudeRevelation of John (also an Apocalypse)
The thirteen epistles that are almost certainly written by Paul, in order, are: Epistle to the Romans First Epistle to the Corinthians Second Epistle to the Corinthians Epistle to the Galatians Epistle to the Ephesians Epistle to the Philippians Epistle to the Colossians First Epistle to the Thessalonians Second Epistle to the Thessalonians First Epistle to Timothy Second Epistle to Timothy Epistle to Titus Epistle to Philemon although some theologians doubt that some letters (eg Ephesians) are written by him as the style of writing is different from the others. The fourteenth letter, the Epistle to the Hebrews - is unlikely to have been written by Paul. He doesn't claim to have written it nor is the style of writing his. Pauline authorship is rejected by modern scholarship and even in the early church its authorship was debated.
Epistle to Dippy was created in 1967-02.
The book of Acts is not a epistle, it is called as The Book of Acts.
Epistle to the Son of the Wolf was created in 1892.
Epistle to Dr Arbuthnot was created in 1734.
The Epistle to the Romans - Barth - was created in 1922.