Kick
Six letter words starting with N:naggednailednapkinnationnaturenectarnearlyneaterneatlyneededneedleneckednegatenervesnestednestleneuternibblenicelynickelniecesnightsnimbleninetynogginnipplenobodynoodlenormalnoticenotionnovelsnovicenozzlenudgednuggetnursesnumbernurishnuzzlenylons
Some four letter words that start with U are:uglyulnaundountouponureaurgeused
sablesaltysandysaladsharesharpshanksharkskimpskillskirtslimesliceslideslopescuffscorescarfscramsmallsmilesmokespadespanksparkspeckspendspellsinceswordsheetsheersheepsceneshearsheikshakeshellshallskunkstinkstankstunkstartstampshameshiftshineswarmstormstoopstoolstovestonestolesweetsweatswearswornstumpstungstuckstackstickstockstripsteamstealsteelswingstingsnakesnackswingsmartstrumstorestorksmock
That is a trick question. You can't make a four letter word using all five vowels.
Kick
Four-letter words ending with K:amokbackbalkbankbarkbaskbeakbeckbilkbockbookbuckbulkbunkcaskcockconkcookcorkdankdarkdeckdeskdirkdiskdockduckdunkduskfinkflakfolkforkfunkgawkgeekgunkhackhankharkhawkhickhockhonkhookhulkhunkhuskjackjerkjockjunkkickkinkkirklacklanklarkleakleeklicklinklocklooklucklurkmackmarkmaskmeekmickmilkminkmockmonkmuckmurkmusknecknicknookoinkpackparkpeakpeckpeekperkpickpinkpockporkpuckpunkrackrankreekrickrinkriskrockrookruckrusksacksankseeksicksilksinksoaksocksucksulksunktacktalktanktaskteakticktnpktooktrektucktuskwalkweakweekwickwinkworkyankyolk
Six letter words starting with N:naggednailednapkinnationnaturenectarnearlyneaterneatlyneededneedleneckednegatenervesnestednestleneuternibblenicelynickelniecesnightsnimbleninetynogginnipplenobodynoodlenormalnoticenotionnovelsnovicenozzlenudgednuggetnursesnumbernurishnuzzlenylons
Some 7 letter S words are:salvagesauntersausagesandingscatterscamperscratchscuffleseasicksectionselfishsendingserioussessionshapelyshiftedsharpenshattershackleshakingsharingshimmershowingshuttershovelsshortlyshowersshuttlesickbedsizzledskilledskatingslammerslimmersmudgedsnaggedsnarledsnowmansnowingsnorkelsolvingsoldierspatterspecialspoiledsputterstaffedstaggerstalkerstarvedstammerstapledstationstartlestiffenstoragestressedstretchstingerstringystrikesstumblestutterstylishsubjectsublimesuctionsugaredsummarysupportsupposeswaggersweatersweeperswelterswingerswimmersyringe
I love these kinda things:aeroplaneallegedlyallergicAlvinallyingAlanastronautastronomyanimaladdictaddictionaanamaerodynamicacademyansweraboutandantantisocialanticlockwiseallactionansweringaddAndyAdamAliceAlisonAustralianAsiaAsianAmazonappleapricotAlexansweredAmyAaronallyarcadeaccordallspiceAustraliaAustriaangelangleAnnieAnnaliseAprilAdelaideAlabamaAbbyAbigailadsadvertisingAmenadvertactionaceawesomeawkwardAfricaautonomyatAlannaappliqueingAddictingAmericanalmondavocadoamend
Alliteration
They are all four-letter words.
Some four letter words that start with U are:uglyulnaundountouponureaurgeused
areablabdeedkickkooknounsaysdeadhighhaththatbombtiltpumpsitsnon(french)pulppropfluffhushGrogbobb
There are no 4 letter words that begin with J and end with W. There are less than 100 four letter words that start with the letter J. There are four letter words starting with J and ending with all letters except c, i, j, q, v and w.
alliteration
gatheringgenerategenerousgeometrygemologygeneticsgesturesgiraffesgiganticgigglingglitterygloriousgluttonygutturalgorgeousgovernorgraduategracefulgratefulgraciousgridlockgrillinggrowlinggruelingguessinggymnasts