▁See ▁also ▁▁ ▁List ▁of ▁cut aneous ▁conditions ▁ ▁X - type ▁hist i oc yt osis ▁ ▁References ▁ ▁External ▁links ▁▁ ▁Category : Mon ocy te - ▁and ▁macro ph age - related ▁cut aneous ▁conditions <0x0A> </s> ▁M â ch ec ourt ▁ ▁is ▁a ▁commune ▁in ▁the ▁A is ne ▁department ▁in ▁Haut s - de - France ▁in ▁northern ▁France . ▁ ▁Population ▁ ▁See ▁also ▁Comm unes ▁of ▁the ▁A is ne ▁department ▁ ▁References ▁IN SEE ▁ ▁Category : Comm unes ▁of ▁A is ne ▁Category : A is ne ▁communes ▁articles ▁need ing ▁translation ▁from ▁French ▁Wikipedia <0x0A> </s> ▁In ▁computer ▁science ▁and ▁information ▁science , ▁an ▁ont ology ▁en comp ass es ▁a ▁representation , ▁formal ▁naming ▁and ▁definition ▁of ▁the ▁categories , ▁properties ▁and ▁relations ▁between ▁the ▁concepts , ▁data ▁and ▁entities ▁that ▁subst anti ate ▁one , ▁many ▁or ▁all ▁domains ▁of ▁disc ourse . ▁More ▁simply , ▁an ▁ont ology ▁is ▁a ▁way ▁of ▁showing ▁the ▁properties ▁of ▁a ▁subject ▁area ▁and ▁how ▁they ▁are ▁related , ▁by ▁defining ▁a ▁set ▁of ▁concepts ▁and ▁categories ▁that ▁represent ▁the ▁subject . ▁ ▁Every ▁academic ▁discipline ▁or ▁field ▁creates ▁ont ologies ▁to ▁limit ▁complexity ▁and ▁organ ize ▁data ▁into ▁information ▁and ▁knowledge . ▁New ▁ont ologies ▁improve ▁problem ▁solving ▁within ▁that ▁domain . ▁Trans l ating ▁research ▁papers ▁within ▁every ▁field ▁is ▁a ▁problem ▁made ▁easier ▁when ▁exper ts ▁from ▁different ▁countries ▁maintain ▁a ▁controlled ▁voc ab ul ary ▁of ▁j arg on