No -
it is not a person or place etc
Unless, it is the first word in a sentence.
transfusion
transfusion is required for you. Or you will die.
The Greek capital letter for Xi is Ξ.
The Greek capital letter for Lamda is Λ.
do you use a capital letter for the word knighted
Yes, it is short for Veterinarian which has a capital letter.
No, "homework" does not need a capital letter unless it is at the beginning of a sentence or used in a title.
The Greek capital letter for Delta is Δ.
The Greek capital letter for Omega is Ω.
The Greek capital letter for Phi is Φ.
The Greek capital letter for Theta is Θ.
The Greek capital letter for Psi is Ψ.