[すりあわせ, suriawase] (n) (1) precision surface finishing; lapping; (2) bouncing of ideas (opinions, etc.) off each other to obtain a fine-tuned integrated whole
[nikopon] (n) (1) backslapping; a smile and a tap on the shoulder; (2) backslapper; someone who smiles and gives you a slap on the shoulder; someone who wins people over