Difference between Hello and Hullo

HELLO vs HULLO: NOUN

Used to greet someone, answer the telephone, or express surprise.
An exclamation used as a greeting, to call attention, as an exclamation of surprise, or to encourage one. This variant of halloo and holloo has become the dominant form. In the United States, it is the most common greeting used in answering a telephone.
A greeting (salutation) said when meeting someone or acknowledging someone’s arrival or presence.
A greeting used when answering the telephone.
Used sarcastically to imply that the person addressed or referred to has done something the speaker or writer considers to be foolish.
An expression of puzzlement or discovery.
A call for response if it is not clear if anyone is present or listening, or if a telephone conversation may have been disconnected.

An exclamation designed to attract the attention of a person at a distance; also, a mere greeting between persons meeting.

Yes, Greetings, Hallo, Hey, Cheerio, Hola, Bonjour, Ciao, Greeting, Goodnight, Goodbye, How do you do, Hullo, Howdy, Hi

Awright, Aww, Dearie, Yessir, Huzzah, Hmph, Pshaw, Maam, Wassup, Hiya, Hallo, How do you do, Howdy, Hi, Hello

Holla, Salutation, Whatcha, Hiya, Yes, Greetings, Hallo, Hey, Hola, Greeting, Goodnight, Goodbye, How do you do, Hullo, Howdy

Looky, Awright, Aww, Dearie, Yessir, Huzzah, Hmph, Pshaw, Maam, Wassup, Hiya, Hallo, How do you do, Howdy, Hello

Hello, I combine so many times by request.
Hierome Charlotte Chandler Hello, I must be going Tag image file format Lianne Dalziel Hello, I Must Be Going!
An LSR maintains a hold timer with each Hello adjacency that it restarts when it receives a Hello that matches the adjacency.
Hello Cain Cool Letter from Cain PTO President: Hello Cain Cool Cats!
Windows Hello face authentication, and a supported fingerprint reader is required for Windows Hello fingerprint authentication.
Common Hello Parameters TLV Specifies parameters common to all Hello messages.
Say hello to Liberty and say hello to an Easy Advance.
The Hello Protocol The Hello Protocol is responsible for establishing and maintaining neighbor relationships.
You also need to download the following fonts from Jen Jones, Hello Sunshine and Hello Poppin Tags!
If not, it creates a Hello adjacency for the Hello source and starts its hold timer.

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Not sinuously, but ZETIA won't fix the high hullo.
Hullo Maria, only a few days left in the year.
Hullo Central had not let it come to that yet.
Hullo, Bates, I was just coming to see you.
One last hullo -- I restlessly perform it.