Which is the oldest of the two brothers? vs Who is the oldest of the two brothers?

Both phrases are correct, but they are used in different contexts. 'Which is the oldest of the two brothers?' is used when comparing objects or things, while 'Who is the oldest of the two brothers?' is used when comparing people. Therefore, the choice between the two depends on whether you are comparing people or things.

Last updated: March 23, 2024 • 1210 views

This phrase is correct and commonly used when comparing objects or things.

"Which is the oldest of the two brothers? "

This phrase is used when comparing the age or seniority of objects, things, or non-human entities.

Show examples from the web [+]

The oldest of the two brothers, Seth Gecko... was serving time in Rollings, Kansas State Penitentiary... for his part in the 1988 Scott City bank robbery... in which two law enforcement officers lost their lives.
You see, I'm one of the two brothers.
They also put Mustafa in my lap and took a picture of the two brothers.
At this point, we don't know if it's by our gunfire or that of the two brothers.
Some third parties have questioned in particular the prospects of return to viability of Dungeness B, which is the oldest of BE's nuclear plants.
Trade policy is the oldest of the EU's external common policies.
And then Lenny is the oldest of the Papagus boys.
Mark O'Brien is the oldest of four children and raised Catholic.
And then Lenny is the oldest of the Papagus boys.
Tom is the oldest of the three brothers.
The young assailant is the oldest of nine children...
Yours is the oldest of the five federations.
It is the oldest of the regional organisations set up after the creation of the UN.
Amid this context of global crisis, tax revenue, which is the oldest source of development funding, is a major issue and a genuine challenge.
This is the oldest Eldanica pine in Natesville.
Graffiti is the oldest form of protest.
These also tend to grow clonally, the oldest of which is 13,000 years old.
This is the oldest church in the city.
This is the oldest known instrument made in China.
This is the oldest police precinct in the city.

This phrase is correct and commonly used when comparing people.

"Who is the oldest of the two brothers? "

This phrase is used when comparing the age or seniority of people or living beings.

Show examples from the web [+]

The oldest of the two brothers, Seth Gecko... was serving time in Rollings, Kansas State Penitentiary... for his part in the 1988 Scott City bank robbery... in which two law enforcement officers lost their lives.
You see, I'm one of the two brothers.
They also put Mustafa in my lap and took a picture of the two brothers.
At this point, we don't know if it's by our gunfire or that of the two brothers.
Trade policy is the oldest of the EU's external common policies.
And then Lenny is the oldest of the Papagus boys.
Mark O'Brien is the oldest of four children and raised Catholic.
And then Lenny is the oldest of the Papagus boys.
Tom is the oldest of the three brothers.
The young assailant is the oldest of nine children...
Some third parties have questioned in particular the prospects of return to viability of Dungeness B, which is the oldest of BE's nuclear plants.
Yours is the oldest of the five federations.
It is the oldest of the regional organisations set up after the creation of the UN.
This is the oldest Eldanica pine in Natesville.
Graffiti is the oldest form of protest.
This is the oldest church in the city.
This is the oldest known instrument made in China.
This is the oldest police precinct in the city.
Rabies is the oldest virus known to man.
It is the oldest city in the Americas.

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Which is the oldest of the two brothers? vs Who is the oldest of the two brothers?