gerna -gen-ge'a- gismu

x1 is the grammar/rules/defining form of language x2 for structure/text x3.

See also bangu, stura, cmavo, jufra.

In notes:

bangu
x1 is a/the language/dialect used by x2 to express/communicate x3 (si'o/du'u, not quote).
cmavo
x1 is a structure word of grammatical class x2, with meaning/function x3 in usage (language) x4.
jufra
x1 (text) is a sentence/statement about x2 [topic/subject/predicate/focus] in language x3.
stura
x1 is a structure/arrangement/organization of x2 [set/system/complexity].
gensu'a
s1 is a grammatical structure/syntax of text s2=g3 defined by the grammar g1 of language g2.
nutko
x1 is the language/sublanguage that uses no apparent terbri/selbri distinction and is used by x2 to express ideas (not text) x3.
pirxo
x1 is the language/sublanguage that uses no apparent recursion rules and is used by x2 to express ideas (not text) x3.
jo'au (exp!)
change version/dialect of parser
fletola
x1 (property of x3) is the grammar of language x2 for elidible construct x3 that is assumed to fill its place even if elided
gentufa
x1 parses text x2 using grammar x3
gretera
x1 (property of x3) is the grammar of language x2 for construct x3 that can be optionally added changing the meaning of the initial construct without it
lenguua
x1 is a language used by x2 to express x3 (du'u, not quote)
turbaro
x1 (text) grammatically expands to x2 (text)
uenzi
x1 is an utterance or text about x2