There are no words that sound the same in every single language, but here are some words or syllables that are common in a lot of languages:
Words referring to "mother" often contain an "m" or the syllable "ma" or "am," e.g. "mama," "amma," etc.
Words referring to "father" often contain a "b" e.g. "baba," "ABBA," or "p," e.g. "papa."
In addition, most languages have borrowed Latin- and Greek-based words in science and technology that are often quite similar in a very large number of languages, e.g. "television," "microscope," etc.
you call them homonyms.
Homonyms - Words that sound the same but are spelled differently
It is called a homonym.
cognate
Tautology
A sound
Cognates.
onomatopoeia
The formation or use of words such as buzz or murmur that imitate the sounds associated with the objects or actions they refer to is called onomatopoeia.
The word meaning "opening" is spelt introduction.
I think, I think sounds about right
The word sought may be ain't (a slang form of isn't) or can't (cannot).There is also a dialect word cain't meaning cannot.
malign
slids
A word that sounds like it's meaning, for example the word slam is an onomatopoeia as it sounds like the noise made when a door slams
No, there is no homophone for "ceiling." A homophone is a word that sounds the same as another word but has a different meaning and spelling. There is no word that sounds like "ceiling" but has a different meaning and spelling.
Sounds like a Tagalog word. -Ask in Philippines.
Any world that sounds right. It may have a meaning, like gypsy, but you use it because it just is a word you want to use.
accoutrement
night as in the opposite of day
boudoir
Tome?
Sounds like it would be "waft".
onomatopoeia