Obera is a female first name.
Recently, the name Obera has been given only a handful of times a year and is therefore particularly rare, at least in the US. In recent years, not even one girl in 100,000 has been named Obera. That means that a girl named Obera is exceptional and may not meet another person with the same name her whole life. Of all Americans currently living, not even one in 100,000 would answer if you shouted out the name Obera.
Well, you might say, you probably figured that out yourself! But what you might not know is: The letter O is quite rare as a first letter for girls' names: only 1.0% of all common girls' names in the US begin with an O. By the way, the most common first letters of girls' names are A, S and M, while U, X and Q are the least common initials of girls' names.
With five letters, the name Obera is comparatively short. In fact, 17.0% of all common first names in the US consist of exactly five letters. Only 7% of all first names are even shorter, while 75% have more than five letters. On average, first names in the US (not counting hyphenated names) are 6.5 letters long. There are no significant differences between boys' and girls' names.
Therefore: As 1.0% of all girls' names begin with an O, this initial letter is significantly less common than the other letters on average. However, individual girls' names with O are really popular, the most common currently being Olivia.
If your name is Obera and someone asks after your name, you can of course just tell them what it is. But sometimes that isn't so easy - what if it's too loud, and you don't understand them well? Or what if the other person is so far away that you can see them but not hear them? In these situations, you can communicate your name in so many other ways: you call spell it, sign it, or even use a flag to wave it...
So that everyone really understands you when you have to spell the name Obera, you can simply say:
Braille is made up of dots, which the blind and visually impaired can feel to read words.
Just use American Sign Language!
These flags are used for maritime communication - each flag represents a letter.
In the navy, sailors of two ships might wave flags to each other to send messages. A sailor holds two flags in specific positions to represent different letters.
In Morse code, letters and other characters are represented only by a series of short and long tones. For example, a short tone followed by a long tone stands for the letter A. Obera sounds like this: