lanzu -laz- gismu

x1 (mass) is a family with members including x2 bonded/tied/joined according to standard x3.

Also clan, tribe; x2 is in x1, a member of x1 (selylanzu for reordered places); relative (= lazmi'u - xy mintu y'y leka cmima da poi lanzu). See also natmi, cmima, girzu, jutsi, klesi.

In notes:

cmima
x1 is a member/element of set x2; x1 belongs to group x2; x1 is amid/among/amongst group x2.
girzu
x1 is group/cluster/team showing common property (ka) x2 due to set x3 linked by relations x4.
jutsi
x1 is a species of genus x2, family x3, etc.; [open-ended tree-structure categorization].
klesi
x1 (mass/si'o) is a class/category/subgroup/subset within x2 with defining property x3 (ka).
natmi
x1 is a nation/ethnic group of peoples x2; [people sharing a history/culture].
flaci'e
f1 is the legal system concerning topic f2 in society f3
lazdu'i
x1 and x2 are members of the same family
lazme'e
c1 (quoted word(s)) is the family name (as opposed to the given name) of family member c2=z2, used by namer/name-user c3. The family is bonded/tied/joined according to standard z3.
lazmi'u
x1 is a family relative of x2
lazyzda
z1 is the home of family members z2=l2.
celdi
x1 is a group of people who love each other in a sexual or non-sexual way, which includes the individuals x2, x3, x4, x5, etc., etc., etc.
speci
x1 is an x2 of species/cultivar/breed/taxon x3.
kleinzu
x1 (mass / plurality) is a class / category / subgroup / subset including members x2, with defining property x3 (ka), within superset x4 (mass)
launzu
x1 is a relative of x2 such that they both share an effective family tree which includes a common relative x3; x1 is a relative of x2 on x3's side of the family.
treicu
x1 is a (general(ized)) heirarchical/pyramidal/directed tree-graph structure on underlying set x2 via partial ordering relation x3 (see notes for default properties).