What are the charaterstics of an aalim and an arif?

One of the characteristic of aalim is mentioned in this Ayat
وَمِنَ النَّاسِ وَالدَّوَابِّ وَالْأَنْعَامِ مُخْتَلِفٌ أَلْوَانُهُ كَذَٰلِكَ إِنَّمَا يَخْشَى اللَّهَ مِنْ عِبَادِهِ الْعُلَمَاءُ إِنَّ اللَّهَ عَزِيزٌ غَفُورٌ

And of men and beasts and cattle are various species of it likewise; those of His servants only who are possessed of knowledge fear Allah; surely Allah is Mighty, Forgiving.
Non Arif can see everything except Allah and arif don't see any thing except Allah

what are the charaterstics of an aalim and an arif?

True alim is the one what he learns he practiced apply in his daily life.
Arif is the one who recognises him self .from where he is, who is his creator and where he is going what Allah wanted from him to do and what Allah wanted from him not to do.As Imam Ali as said
Whoever has recognises himself has recognised the Allah.Self recognition is actual marefat.