1.  young man(n = noun.person) young buck - a teenager or a young adult male;
is a kind of adolescent, stripling, teen, teenager, adult male, man

2.  young man(n = noun.person) beau, boyfriend, fellow, swain - a man who is the lover of a girl or young woman; "if I'd known he was her boyfriend I wouldn't have asked"
is a kind of lover, adult male, man

N  love, fondness, liking, inclination, regard, dilection, admiration, fancy, affection, sympathy, fellow-feeling, tenderness, heart, brotherly love, benevolence, attachment, yearning, eros, tender passion, amour, gyneolatry, gallantry, passion, flame, devotion, fervor, enthusiasm, transport of love, rapture, enchantment, infatuation, adoration, idolatry, Cupid, Venus, myrtle, true lover's knot, love token, love suit, love affair, love tale, love story, the, old story, plighted love, courtship, amourette, free love, maternal love, storge, parental love, young love, puppy love, attractiveness, popularity, favorite, lover, suitor, follower, admirer, adorer, wooer, amoret, beau, sweetheart, inamorato, swain, young man, flame, love, truelove, leman, Lothario, gallant, paramour, amoroso, cavaliere servente, captive, cicisbeo, caro sposo, inamorata, ladylove, idol, darling, duck, Dulcinea, angel, goddess, cara sposa, betrothed, affianced, fiancee, flirt, coquette, amorette, pair of turtledoves, abode of love, agapemone, loving, fond of, taken with, struck with, smitten, bitten, attached to, wedded to, enamored, charmed, in love, love-sick, over head and ears in love, head over heels in love, affectionate, tender, sweet upon, sympathetic, loving, amorous, amatory, fond, erotic, uxorious, ardent, passionate, rapturous, devoted, motherly, loved, beloved well beloved, dearly beloved, dear, precious, darling, pet, little, favorite, popular, congenial, after one's mind, after one's taste, after one's fancy, after one's own heart, to one's mind, to one's taste, to one's fancy, to one's own heart, in one's good graces, dear as the apple of one's eye, nearest to one's heart, lovable, adorable, lovely, sweet, attractive, seductive, winning, charming, engaging, interesting, enchanting, captivating, fascinating, bewitching, amiable, like an angel, amantes amentes, credula res amor est, militat omnis amasius, love conquers all, omnia vincit amor, si vis amari ama, the sweetest joy, the wildest woe.

age of man, apron man, average man, backup man, ballyhoo man, beef man, best man, bionic man, black man, boskop man, brigham young, broth of a man, career man, cave man, city man, college man, common man, company man, con man, confidence man, conjure man, corner man, cow man, customer's man, cy young, danton true young, dirty old man, divorced man, edward young, elevator man, end man, enlisted man, ent man, fall of man, family man, fancy man, feral man, fighting man, fingerprint man, four-minute man, front man, g man, garbage man, gay man, gingerbread man, government man, great man, handy man, hatchet man, have young, heidelberg man, hired man, hit man, holdup man, hollow man, holy man, honest man, inner man, iron man, isle of man, java man, ladies' man, leading man, learned man, leg man, lester willis young, lookout man, loretta young, maintenance man, man, man and wife, man eater, man eating, man friday, man hour, man in the street, man jack, man made, man of action, man of affairs, man of deeds, man of letters, man of means, man of science, man of the cloth, man of the world, married man, mechanical man, medical man, medicine man, middle-aged man, military man, miracle man, modern man, mountain man, muffin man, muscle man, navy man, neandertal man, neanderthal man, odd man out, odd-job man, old man, old man of the mountain, organization man, outdoor man, party man, peking man, piltdown man, pivot man, point man, poor man, pr man, preacher man, prehistoric man, pres young, property man, public relations man, publicity man, railroad man, railway man, red man, remittance man, renaissance man, rewrite man, rhodesian man, rich man, right hand man, right-hand man, section man, service man, sir james young simpson, solo man, song and dance man, sporting man, squaw man, stan the man, stickup man, stone age man, straight man, straw man, strong man, stunt man, t man, thomas young, to a man, trigger man, trinil man, unmarried man, utility man, vigilance man, wealthy man, white man, whitney moore young jr., whitney young, wild man, wise man, wolf man, working man, worship of man, yellow man, yes man, young, young bird, young buck, young carnivore, young fish, young girl, young lady, young mammal, young men's christian association, young one, young person, young turk, young woman, young women's christian association