Algorithm
The word 'algorithm' has its roots in Latinizing the name of Muhammad ibn Musa al-Khwarizmi in a first step to "algorismus". Al-Khwārizmī (, , c. 780–850) was a Persian mathematician, astronomer, geographer, and scholar in the House of Wisdom in Baghdad, whose name means 'the native of Khwarezm', a region that was part of Greater Iran and is now in Uzbekistan.
Armatoloi
The word "armatolos" first appeared in the 15th century during Venetian times. It is derived from a medieval loan from Latin "arma" ('weapon'), probably via Greek αρματολόγος ('someone who deals with arms', 'an armed person') → αρματολόος → αρματολός. According to an older hypothesis, the development of the word may also have been influenced by a conflation with the similar-sounding αμαρτωλός ("sinner"; cf. "hamartia"), which may have been associated with the topic of armed bands through phrases such as "αμαρτωλοί/αρματολοί και κλέφτες" (meaning "sinners and thieves", but also "armatoloi and klephts"). Owing to the parallelism with "αμαρτωλός", the word was also sometimes spelled as "αρματωλός", with the letter omega.