fellow feeling,
sympathy an inclination to support or be loyal to or to agree with an opinion; "his sympathies were always with the underdog"; "I knew I could count on his understanding"
commiseration -
an expression of sympathy with another's grief; "they sent their condolences"
acknowledgement,
acknowledgment a statement acknowledging something or someone; "she must have seen him but she gave no sign of acknowledgment"; "the preface contained an acknowledgment of those who had helped her"