"RADAR" is a noun, and it is an abbreviation that you can pronounce, making it an acronym (literally "High name").
Similar acronyms include "LASER" and "Scuba".
RADAR stands for "RAdio Detection And Ranging".
LASER stands for "Light Amplification by Stimulated Emission of Radiation" ('Radiation in this case refers to the light).
SCUBA stands for "Self Contained Underwater Breathing Apparatus".
The part of speech that the word my is used as is an adjective.
A suffix changes a word's part of speech. For example, the word 'happy' is an adjective. But when you add a suffix, which is an ending, it can change the part of speech. Happily is an adverb. Happiness is a noun.
for
it depends what word it is it could be any part of speech depending on the sentence
The word power is a noun. The plural form is powers.
Radar is a noun.
palindrome
The part of speech for this particular word is a noun.
The part of speech that the word my is used as is an adjective.
The part of speech for the word diplomacy is a noun.
The part of speech for the word civilian is English grammar.
H is a letter, not a word. To be a part of speech, it needs to be a word.
The part of speech for the word "boulevard" is a noun.
The word speech is a noun.
The part of speech for this particular word is a noun.
"Stroobly" is not a standard English word, so it does not have a designated part of speech.
The word speech is a noun.