heart

[1]	(Colloq) ticker , bosom , pump
[2]	stomach , pump , ticker , nerve , courage , bravery , mettle , will , boldness , pluck , resolution , determination , callousness , insensitivity , heartlessness , (Colloq) guts , spunk
[3]	(basic) nature , mettle , nerve , core , centre , spunk , focus , hub , middle , marrow , pith , essence , quintessence , nucleus , nub , crux , basics , fundamentals , (Colloq) nitty-gritty
[4]	sincerity , center , centre , sentiment(s) , feeling(s) , middle , eye , spirit , verve , enthusiasm
[5]	humanity , kernel , substance , humanitarianism , sympathy , core , center , understanding , kindness , centre , essence , kindliness , compassion , gist , heart and soul , empathy , goodness , inwardness , marrow , consideration , concern , meat , nub , soul , tenderness , pith , sum , magnanimity , generosity , nitty-gritty , sensitivity , sensibility , sentiment , pity , (brotherly) love , affection
[6]	spirit
[7]	affection , affectionateness , fondness , tenderness , warmness , warmheartedness , philia