There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.

Qenya 

ilu

noun. universe, world

Qenya [Ety/IL; LR/047; LR/056; LR/072; LRI/Ilu; MRI/Ilu; PE23/105; PE23/110; PE23/111; SD/310; SD/401; SDI2/Ilu; SM/241; SMI/Ilu] Group: Eldamo. Published by

ilu ilúvatar en káre eldain a fírimoin

the Father made the World for Elves and Mortals

Qenya [LR/063; LR/072] Group: Eldamo. Published by

ilu vanya, fanya, eari, i-mar, ar ilqa ímen

the World is fair, the sky, the seas, the earth, and all that is in them

ilúve ilu

proper name. Heaven, the universe, all that is

A Quenya term appearing in Númenórean stories from the 1940s referring to the entirety of existence, both the physical universe and Heaven (SD/401), apparently a combination of ilúve “universe” or “Heaven” and ilu “universe, world”.

númeheruvi arda sakkante lenéme ilúvatáren

the Lords of the West broke the world by leave of Ilúvatar

|1|   2   |3|4|5| |manwe|herunūmen|{herunūmen >>} Nūmekundo|númeheruvi| |ilu|{ilu >> eru >>}|arda| |terhante|{terhante >>} askante|sakkante| | |...|{... >>}|lenéme| | |Ilúvatáren|

Qenya [LR/047; LR/056; SD/246; SD/310; SD/311; VT24/07] Group: Eldamo. Published by

il(u)-

prefix. all the, the whole, the entire; all, any

ilduma

noun. heaven

Qenya [PE21/04; PE21/08; PE21/38; PE21/42; PE21/43; PE21/46; PE21/47] Group: Eldamo. Published by

Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.