Whoa, dude, I'm just going on hearsay here, not submitting a paper.
Out of curiosity, do any of the languages you speak have declensions? In Hebrew, every verb is said differently based on what it is referring to (e.g. "okhel," which means eat - the word changes depending on whether the subject is by masculine or feminine, whether you are addressing the subject directly or talking about it, whether the subject is singular or plural, and whether the action is taking place in the past, present or future - plus the infinitive). I haven't even started learning future tense yet, so I know only a mere thirteen permutations of every single verb. For all I know, there could be thirty.
Is that what declensions are or am I thinking of something else?
Proto-Indo European had declensions so all IE Languages exhibit declension in some form or another, even English. An IE language's words are, traditionally, composed of three parts: a root word - usually a verb existing in a verbal form - plus a particle suffix indicating how the verb's action is being expressed. These two pieces join to form the stem. The Latin term
doctor is an example of a stem - the verb
doceo ("I teach, educate, bring up") is joined with the masculine agent particle
-tor ("He who") to get the word
doctor "one who teaches". To this stem is attached inflectional endings which follow a prescribed pattern according to the shape of the word. Syntax is divided into a number of cases, each tasked with indicating an individual word's role in the wider context of the clause or utterance. Declension is the process by which a word's inflectional ending falls (declines) from a base form (nominative in IE) to an inflected form.
English has this in its pronouns, which decline from a base nominative form to either a genitive (possessive) form or an objective (accusative, indirect, or prepositional) form:
nom | he
obj | him
gen | his
French and Spanish also have this in their pronouns, both possessing a nominative, genitive, accusative (direct object), and dative (indirect object) form. French also possesses a disjunctive form which it uses for emphasis and prepositional objects:
nom | él | il
gen | el suyo | le sien
acc | lo | le
dat | le | lui
disj | - | lui
Latin and Greek have this for all nouns and adjectives, both for Singular and Plural in Latin, and additionally for a dual form (e.g. My [two] hands built...; I saw it with my [two] eyes) in some variants of Ancient Greek (most prominently in Attic and Homeric). Latin has 7 cases - nominative, genitive, dative, accusative, ablative (movement away or separation from a goal, instrument/cause, other random assorted uses), a vocative (for addressing a noun directly as in "et tu
Brute"), and occasionally a Locative (static location) in the case of the house, cities, and some small islands (e.g. Lesbos -> Lesbi "On Lesbos"). Greek has 5 cases - nominative, genitive, accusative, dative, and vocative.
Latin has 5 declensional paradigms, determined by how they are inflected in their genitive form:
| I | II | III | IV | V
nom | femina | populus | homō | motus | diēs
gen | feminae | populī | hominis | motūs | diēī
dat | feminae | populō | hominī | motū | diēī
acc | feminam | populum | hominem | motum | diem
abl | feminā | populō | homine | motū | diē
voc | femina | populē | homō | motus | diēs
nom pl | feminae | populī | hominēs | motūs | diēs
gen pl | feminārum | populōrum | hominum | motuum | diērum
dat pl | feminīs | populīs | hominibus | motibus | diēbus
acc pl | feminas | populōs | hominēs | motūs | diēs
abl pl | feminīs | populīs | hominibus | motibus | diēbus
voc pl | feminae | populī | hominēs | motūs | diēs
Because all syntax is indicated via inflections, you can arrange a sentence in any order you want in Latin, moving words around as you want to emphasize the parts of the sentence that are most important. Everything is inferred through the form alone:
Nominative |
Genitive |
Dative |
Accusative |
Ablative |
Adverb
Hi omnes lingua,
institutis,
legibus inter se differunt.
Gallos ab Aquitanis Garumna flumen,
a Belgis Matrona et
Sequana diuidit.
All these people differ
among themselves in respect to language, institutions, and
laws.
The river Garumna [Garonne] divides
the Gauls from the Aquitanians, and
the rivers Matrona [Marne] and
Sequana [Seine] divides
them (the Gauls) from the Belgae.
Horum omnium fortissimi sunt
Belgae, propterea quod
a cultu atque
humanitate provinciae longissime absunt,
minimeque
ad eos mercatores saepe commeant atque
ea quae ad effeminandos animos pertinent important
proximique sunt
Germanis,
qui trans Rhenum incolunt,
quibuscum continenter bellum gerunt.
Of all these peoples,
the bravest are
the Belgae, owing to [the fact] that [they] are
furthest distant from the culture and
refinement of [our] province (Provence), and that
merchants least frequently visit
them and [they] import
those things which tend
to effeminate the mind;
They also
neighbor the Germani,
who reside
across the Rhenus (Rhine),
with whom [they]
continuously are waging
war.