In sub-tropical areas, allamanda cathartica is a soft shrub with clusters of bright yellow flowers at the tips of twigs. Not strongly fragrant, at least not in my garden.
bignonia
"Oondoroo" (Solanum simile) is an Australian native evergreen shrub with purple star shaped flowers.
The plant you are describing is likely the firethorn (Pyracantha). Firethorn is known for its clusters of small orange berries and holly-shaped leaves. It is a versatile plant that can be grown as a shrub or trained against a wall.
Moon Flower
A flowering shrub is any shrub that flowers. Some have more showy flowers than others but all shrubs flower.
Lantana
The Laura pendulum shrub, also known as Weeping Bottlebrush, is a small tree with narrow, pendulous branches. It has bright red bottlebrush-shaped flowers that bloom in clusters and attract birds. The foliage is green and lance-shaped, adding to its ornamental appeal in landscaping.
Motia is a shrub. It is also known as Arabian jasmine and is often grown for its fragrant white flowers.
a pumpkin is orange and a pumpkin while a shrub is not....
Yellow
Acacia.