"to make a sound". Words may be connected to their class by more than one metaphor. For example, mkono is an active body part, and mto is an active natural force, but they are also both long and thin. Things with a trajectory, such as mpaka 'border' and mwendo 'journey', are classified with long thin things, as in many other languages with noun classes. This may be further extended to anything dealing with time, such as mwaka 'year' and perhaps mshahara 'wages'. Animals exceptional in some way and so not easily fitting in the other classes may be placed in this class. The other classes have foundations that may at first seem similarly counterintuitive. In short, Classes 1–2 include most words for people: kin terms, professions, ethnicities, etc., including translations of most English words ending in -er. They include a couple of generic words for animals: mnyama 'beast', mdudu 'bug'. Classes 5–6 have a broad semantic range of groups, expanses, and augmentatives. Although interrelated, it is easier to illustrate if broken down: Augmentatives, such as joka 'serpent' from nyoka 'snake', lead to titles and other terms of respect (the opposite of diminutives, which lead to terms of contempt): Bwana 'Sir', shangazi 'aunt', fundi 'craftsman', kadhi 'judge' Expanses: ziwa 'lake', bonde 'valley', taifa 'country', anga 'sky' from this, mass nouns: maji 'water', vumbi 'dust' (and other liquids and fine particulates that may cover broad expanses), kaa 'charcoal', mali 'wealth', maridhawa 'abundance' Collectives: kundi 'group', kabila 'language/ethnic group', jeshi 'army', daraja ' stairs', manyoya 'fur, feathers', mapesa 'small change', manyasi 'weeds', jongoo 'millipede' (large set of legs), marimba 'xylophone' (large set of keys) from this, individual things found in groups: jiwe 'stone', tawi 'branch', ua 'flower', tunda 'fruit' (also the names of most fruits), yai 'egg', mapacha 'twins', jino 'tooth', tumbo 'stomach' (cf. English "guts"), and paired body parts such as jicho 'eye', bawa 'wing', etc. also collective or dialogic actions, which occur among groups of people: neno 'a word', from kunena 'to speak' (and by extension, mental verbal processes: wazo 'thought', maana 'meaning'); pigo 'a stroke, blow', from kupiga 'to hit'; gomvi 'a quarrel', shauri 'advice, plan', kosa 'mistake', jambo 'affair', penzi 'love', jibu 'answer', agano 'promise', malipo 'payment' From pairing, reproduction is suggested as another extension (fruit, egg, testicle, flower, twins, etc.), but these generally duplicate one or more of the subcategories above Classes 9–10 are used for most typical