Sample - rewrite

server {
        listen 80 ;
        listen [::]:80 ;

        root /var/www/html;
        index index.html index.htm index.nginx-debian.html;

        server_name _;

        location / {
                rewrite ^/test1(.*) http://www.google.com permanent;
                rewrite ^/test2(.*) http://www.google.com;
                try_files $uri $uri/ =404;
        }
}

Sample - return

server {
        listen 80 ;
        listen [::]:80 ;

        root /var/www/html;
        index index.html index.htm index.nginx-debian.html;

        server_name _;

        location / {
                return 301 http://www.google.com ;
                return 302 http://www.google.com ;
                try_files $uri $uri/ =404;
        }
}

Sample - proxy_pass

server {
        listen 80 ;
        listen [::]:80 ;

        root /var/www/html;
        index index.html index.htm index.nginx-debian.html;

        server_name _;

        location / {
                proxy_pass http://www.google.com ;
                try_files $uri $uri/ =404;
        }
}