This is the 3293rd most frequent Arabic word.
جيش
Army
In this sentence, 'جيش' refers to the formal military organization responsible for national defense.
الجيش يحمي البلاد وقت الحرب.
The army protects the country during war.
Here, 'جيش' indicates the collective body of individuals belonging to the national military force.
كل أفراد الجيش مدربون جيدًا.
All members of the army are well trained.
In this usage, 'جيش' metaphorically describes a large organized group, in this case of ants.