acquaintance

noun 0.743

nodding

noun 0.713

acquaintanceship

noun 0.712

quaintance

noun 0.690

reacquaintance

noun 0.630

acquittance

noun 0.625

familiar

noun 0.586

nod

noun 0.565

familiarity

noun 0.561

working knowledge

noun 0.545

familiarization

noun 0.542

hobnobbing

noun 0.539

mutual friend

noun 0.538

hobnob

noun 0.536

shake hands

noun 0.530

handshaking

noun 0.520

known

noun 0.520

handshake

noun 0.517

know

noun 0.515

acknowledgment

noun 0.510

hail-fellow

noun 0.508

headshake

noun 0.508

knowing

noun 0.503

friendly

noun 0.501

friend

noun 0.500