comrade

associate, companion, comrade, colleague, fellow, partner

这些名词均有“同事，伙伴”之意。
associate: 普通用词，侧重指在利害关系上密切相关。
companion: 指陪伴他人的人，即同伴或陪伴。
comrade: 指具有共同的事业、利益关系相一致的人。
colleague: 一般用于对同事的正式称呼，基本上专用在职业关系上。
fellow: 多用复数形式，指一块住、生活或同行共事的人。
partner: 指事业中处于合伙关系的人，或指婚姻、游戏、跳舞中的另一方。

名词 comrade:

1. a person who is frequently in the company of another
   同义词：companion, fellow, familiar, associate
2. a fellow member of the Communist Party
3. used as a term of address for those male persons engaged in the same movement
   同义词：brother

1. They interred their dear comrade in the arms.
   他们埋葬了他们亲爱的战友。
2. A person with whom one is allied in a struggle or cause; a comrade.
   同志，同事和你一起为同一件事而联合共同奋斗的人; 同志
3. They were comrades in arms.
   他们是战友。

com.rade

n.（名词）
A person who shares one`s interests or activities; a friend or companion.
同志：与别人共享利益或一起参加活动的人；朋友或伴友
Often Comrade A fellow member of a group, especially a fellow member of the Communist Party.
常作 Comrade 成员：某组织中的一员，尤指共产党的一员

来源：
French camarade
法语 camarade
from Old French [roommate]
源自 古法语 [室友]
from Old Spanish camarada [barracks company, roommate]
源自 古西班牙语 camarada [战友，室友]
from camara [room]
源自 camara [房间]
from Late Latin camera * see chamber
源自 后期拉丁语 camera *参见 chamber

【引伸】
com.radeship.
n.（名词）
<注释>A comrade can be socially or politically close,a closeness that is found at the etymological heart of the wordcomrade. In Spanish the Latin wordcamara, with its Late Latin meaning .chamber, room,. was retained, and the derivativecamarada, with the sense .roommates, especially barrack mates,. was formed. Camarada then came to have the general sense .companion.. English borrowed the word from Spanish and French,Englishcomrade being first recorded in the 'th century. The political sense ofcomrade, now associated with Communism, had its origin in the late-9th-century use of the word as a title by socialists and communists in order to avoid such forms of address asmister. This usage, which originated during the French Revolution,is first recorded in English in 884.
同志在社会或政治关系上是亲密的，这种亲密的意思可以从comrade 的词源中找到。 在西班牙语中，拉丁词camara 仍保留有它的拉丁语意思.小房间，房间.， 同时出现了它的派生词camarada 意思是.室友，尤指同营房的战友.。 接着Camarada 具有了一般.同伴.的意思。 英语从西班牙语和法语中借用了这个词，英语中comrade 第一次出现是在'世纪。 comrade 的政治意义现在是与共产主义相联的， 最初在9世纪末，它是作为社会主义者或共产主义者的前称以区别于mister（先生） 一词的。 这种用法起源于法国大革命时期，第一次在英语中出现则是在884年。